YQL-20436: Add YqlSelect to differential testing

Added `AutoYqlSelect` differential testing target for
`minirun` and `yt_file`.

It helped to explore at least the following issues:
1. Not set `DeriveColumnOrder` (fixed)
2. Absent `Unordered` decorator (fixed)
3. Unsupported not fully-qualified `VALUES` (fixed)
4. Premature cluster check leading to error instead of an
   unsupported status (fixed)
5. Invalid column name generation (fixed)
6. Absent top-level select column order (postponed)
7. Absent error on column name collision (postponed)
8. Other issues unexplored due to noise from bullet 6.

As tests are failing `AutoYqlSelect` is commented out
until `YqlSelect` is ready.

Also added some missing tests for `LIMIT`/`OFFSET` and `WHERE`.
commit_hash:70424260914acff8275f3544e2ad7a99789f7620

0 files changed, 0 insertions, 0 deletions