YT-19324: move YT provider to ydb/library/yql

This commit is formed by the following script: https://paste.yandex-team.ru/6f92e4b8-efc5-4d34-948b-15ee2accd7e7/text.
This commit has zero effect on all projects that depend on YQL.

The summary of changes:
- `yql/providers/yt -> ydb/library/yql/providers/yt `- the whole implementation of YT provider is moved into YDB code base for further export as a part of YT YQL plugin shared library;
- `yql/providers/stat/{expr_nodes,uploader} -> ydb/library/yql/providers/stat/{expr_nodes,uploader}` - a small interface without implementation and the description of stat expr nodes;
- `yql/core/extract_predicate/ut -> ydb/library/yql/core/extract_predicate/ut`;
- `yql/core/{ut,ut_common} -> ydb/library/yql/core/{ut,ut_common}`;
- `yql/core` is gone;
- `yql/library/url_preprocessing -> ydb/library/yql/core/url_preprocessing`.

**NB**: all new targets inside `ydb/` are under `IF (NOT CMAKE_EXPORT)` clause which disables them from open-source cmake generation and ya make build. They will be enabled in the subsequent commits.

1 files changed, 397 insertions, 0 deletions

diff --git a/yt/cpp/mapreduce/interface/fwd.h b/yt/cpp/mapreduce/interface/fwd.h
new file mode 100644
index 0000000000..0434c03d8b
--- /dev/null
+++ b/yt/cpp/mapreduce/interface/fwd.h
@@ -0,0 +1,397 @@
+#pragma once
+
+///
+/// @file yt/cpp/mapreduce/interface/fwd.h
+///
+/// Header containing mostly forward declarations of types.
+
+
+#include <util/generic/fwd.h>
+#include <util/system/types.h>
+
+#include <variant>
+
+/// @cond Doxygen_Suppress
+namespace google::protobuf {
+    class Message;
+}
+
+namespace NYT {
+
+    ////////////////////////////////////////////////////////////////////////////////
+    // batch_request.h
+    ////////////////////////////////////////////////////////////////////////////////
+
+    class IBatchRequest;
+    using TBatchRequestPtr = ::TIntrusivePtr<IBatchRequest>;
+
+    ////////////////////////////////////////////////////////////////////////////////
+    // client.h
+    ////////////////////////////////////////////////////////////////////////////////
+
+    enum ELockMode : int;
+
+    struct TStartTransactionOptions;
+
+    struct TLockOptions;
+
+    template <class TDerived>
+    struct TTabletOptions;
+
+    struct TMountTableOptions;
+
+    struct TUnmountTableOptions;
+
+    struct TRemountTableOptions;
+
+    struct TReshardTableOptions;
+
+    struct TAlterTableOptions;
+
+    struct TLookupRowsOptions;
+
+    struct TSelectRowsOptions;
+
+    struct TCreateClientOptions;
+
+    struct TAlterTableReplicaOptions;
+
+    struct TGetFileFromCacheOptions;
+
+    struct TPutFileToCacheOptions;
+
+    struct TCheckPermissionResult;
+    struct TCheckPermissionResponse;
+    struct TCheckPermissionOptions;
+
+    struct TTabletInfo;
+
+    class ILock;
+    using ILockPtr = ::TIntrusivePtr<ILock>;
+
+    class ITransaction;
+    using ITransactionPtr = ::TIntrusivePtr<ITransaction>;
+
+    class ITransactionPinger;
+    using ITransactionPingerPtr = ::TIntrusivePtr<ITransactionPinger>;
+
+    struct IOperation;
+    using IOperationPtr = ::TIntrusivePtr<IOperation>;
+
+    class IClientBase;
+
+    class IClient;
+
+    using IClientPtr = ::TIntrusivePtr<IClient>;
+    using IClientBasePtr = ::TIntrusivePtr<IClientBase>;
+
+    ////////////////////////////////////////////////////////////////////////////////
+    // config.h
+    ////////////////////////////////////////////////////////////////////////////////
+
+    struct TConfig;
+    using TConfigPtr = ::TIntrusivePtr<TConfig>;
+
+    ////////////////////////////////////////////////////////////////////////////////
+    // cypress.h
+    ////////////////////////////////////////////////////////////////////////////////
+
+    enum ENodeType : int;
+
+    struct TCreateOptions;
+
+    struct TRemoveOptions;
+
+    struct TGetOptions;
+
+    struct TSetOptions;
+
+    struct TMultisetAttributesOptions;
+
+    struct TListOptions;
+
+    struct TCopyOptions;
+
+    struct TMoveOptions;
+
+    struct TLinkOptions;
+
+    struct TConcatenateOptions;
+
+    struct TInsertRowsOptions;
+
+    struct TDeleteRowsOptions;
+
+    struct TTrimRowsOptions;
+
+    class ICypressClient;
+
+    ////////////////////////////////////////////////////////////////////////////////
+    // errors.h
+    ////////////////////////////////////////////////////////////////////////////////
+
+    class TApiUsageError;
+
+    class TYtError;
+
+    class TErrorResponse;
+
+    struct TFailedJobInfo;
+
+    class TOperationFailedError;
+
+    ////////////////////////////////////////////////////////////////////////////////
+    // node.h
+    ////////////////////////////////////////////////////////////////////////////////
+
+    class TNode;
+
+    ////////////////////////////////////////////////////////////////////////////////
+    // common.h
+    ////////////////////////////////////////////////////////////////////////////////
+
+    using TTransactionId = TGUID;
+    using TNodeId = TGUID;
+    using TLockId = TGUID;
+    using TOperationId = TGUID;
+    using TTabletCellId = TGUID;
+    using TReplicaId = TGUID;
+    using TJobId = TGUID;
+
+    using TYPath = TString;
+    using TLocalFilePath = TString;
+
+    template <class T, class TDerived = void>
+    struct TOneOrMany;
+
+    // key column values
+    using TKey = TOneOrMany<TNode>;
+
+    class TSortColumn;
+
+    // column names
+    using TColumnNames = TOneOrMany<TString>;
+
+    // key column descriptors.
+    class TSortColumns;
+
+    enum EValueType : int;
+
+    enum ESortOrder : int;
+
+    enum EOptimizeForAttr : i8;
+
+    enum EErasureCodecAttr : i8;
+
+    enum ESchemaModificationAttr : i8;
+
+    enum class EMasterReadKind : int;
+
+    class TColumnSchema;
+
+    class TTableSchema;
+
+    enum class ERelation;
+
+    struct TKeyBound;
+
+    struct TReadLimit;
+
+    struct TReadRange;
+
+    struct TRichYPath;
+
+    struct TAttributeFilter;
+
+    ////////////////////////////////////////////////////////////////////////////////
+    // io.h
+    ////////////////////////////////////////////////////////////////////////////////
+
+    enum class EFormatType : int;
+
+    struct TFormat;
+
+    class IFileReader;
+
+    using IFileReaderPtr = ::TIntrusivePtr<IFileReader>;
+
+    class IFileWriter;
+
+    using IFileWriterPtr = ::TIntrusivePtr<IFileWriter>;
+
+    class IBlobTableReader;
+    using IBlobTableReaderPtr = ::TIntrusivePtr<IBlobTableReader>;
+
+    class TRawTableReader;
+
+    using TRawTableReaderPtr = ::TIntrusivePtr<TRawTableReader>;
+
+    class TRawTableWriter;
+
+    using TRawTableWriterPtr = ::TIntrusivePtr<TRawTableWriter>;
+
+    template <class T, class = void>
+    class TTableReader;
+
+    template <class T, class = void>
+    class TTableRangesReader;
+
+    template <typename T>
+    using TTableRangesReaderPtr = ::TIntrusivePtr<TTableRangesReader<T>>;
+
+    template <class T>
+    using TTableReaderPtr = ::TIntrusivePtr<TTableReader<T>>;
+
+    template <class T, class = void>
+    class TTableWriter;
+
+    template <class T>
+    using TTableWriterPtr = ::TIntrusivePtr<TTableWriter<T>>;
+
+    struct TYaMRRow;
+
+    using ::google::protobuf::Message;
+
+    class ISkiffRowParser;
+
+    using ISkiffRowParserPtr = ::TIntrusivePtr<ISkiffRowParser>;
+
+    class ISkiffRowSkipper;
+
+    using ISkiffRowSkipperPtr = ::TIntrusivePtr<ISkiffRowSkipper>;
+
+    namespace NDetail {
+
+    class TYdlGenericRowType;
+
+    } // namespace NDetail
+
+    template<class... TYdlRowTypes>
+    class TYdlOneOf;
+
+    template<class... TProtoRowTypes>
+    class TProtoOneOf;
+
+    template<class... TSkiffRowTypes>
+    class TSkiffRowOneOf;
+
+    using TYaMRReader = TTableReader<TYaMRRow>;
+    using TYaMRWriter = TTableWriter<TYaMRRow>;
+    using TNodeReader = TTableReader<TNode>;
+    using TNodeWriter = TTableWriter<TNode>;
+    using TMessageReader = TTableReader<Message>;
+    using TMessageWriter = TTableWriter<Message>;
+    using TYdlTableWriter = TTableWriter<NDetail::TYdlGenericRowType>;
+
+    template <class TDerived>
+    struct TIOOptions;
+
+    struct TFileReaderOptions;
+
+    struct TFileWriterOptions;
+
+    struct TTableReaderOptions;
+
+    class TSkiffRowHints;
+
+    struct TTableWriterOptions;
+
+    ////////////////////////////////////////////////////////////////////////////////
+    // job_statistics.h
+    ////////////////////////////////////////////////////////////////////////////////
+
+    class TJobStatistics;
+
+    template <typename T>
+    class TJobStatisticsEntry;
+
+    ////////////////////////////////////////////////////////////////////////////////
+    // operation.h
+    ////////////////////////////////////////////////////////////////////////////////
+
+    class TFormatHints;
+
+    struct TUserJobSpec;
+
+    struct TMapOperationSpec;
+
+    struct TRawMapOperationSpec;
+
+    struct TReduceOperationSpec;
+
+    struct TMapReduceOperationSpec;
+
+    struct TJoinReduceOperationSpec;
+
+    struct TSortOperationSpec;
+
+    class IIOperationPreparationContext;
+
+    class IJob;
+    using IJobPtr = ::TIntrusivePtr<IJob>;
+
+    class IRawJob;
+    using IRawJobPtr = ::TIntrusivePtr<IRawJob>;
+
+    enum EMergeMode : int;
+
+    struct TMergeOperationSpec;
+
+    struct TEraseOperationSpec;
+
+    template <class TR, class TW>
+    class IMapper;
+
+    template <class TR, class TW>
+    class IReducer;
+
+    template <class TR, class TW>
+    class IAggregatorReducer;
+
+    struct TSuspendOperationOptions;
+
+    struct TResumeOperationOptions;
+
+    enum class EOperationBriefState : int;
+
+    struct TOperationAttributes;
+
+    struct TOperationOptions;
+
+    enum class EOperationAttribute : int;
+
+    struct TOperationAttributeFilter;
+
+    struct TGetOperationOptions;
+
+    struct TListOperationsOptions;
+
+    struct TGetJobOptions;
+
+    struct TListJobsOptions;
+
+    struct IOperationClient;
+
+    enum class EFinishedJobState : int;
+
+    enum class EJobType : int;
+    enum class EJobState : int;
+    enum class ETaskName : int;
+    class TTaskName;
+
+    struct TJobBinaryDefault;
+
+    struct TJobBinaryLocalPath;
+
+    struct TJobBinaryCypressPath;
+
+    using TJobBinaryConfig = std::variant<
+        TJobBinaryDefault,
+        TJobBinaryLocalPath,
+        TJobBinaryCypressPath>;
+
+    struct TRetryConfig;
+    class IRetryConfigProvider;
+    using IRetryConfigProviderPtr = ::TIntrusivePtr<IRetryConfigProvider>;
+}
+/// @endcond