atrac3: reimplement tonal encoding. Use flatness-based tonal extractionnew_psy

- Add shared CalcSpectralFlatnessPerBfu helper in atrac_psy_common
  with BFU-table mapping.
- Implement ATRAC3 tonal extraction: compute MDCT energy, estimate
  per-BFU flatness, extract up to 5-bin strongest tonal run in
  low-flatness BFUs, and zero extracted bins in residual.
- Map extracted tonal bins into TTonalBlocks and integrate them into
  bitstream coding.
- Update ATRAC3 bit allocation - reduce residual bits for BFUs with tonal
  blocks, and increase tonal quantizer selection.
- Restore --notonal CLI option in main.cpp for A/B comparison.

1 files changed, 1 insertions, 0 deletions

diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
index 8f92f68..481d228 100644
--- a/test/CMakeLists.txt
+++ b/test/CMakeLists.txt
@@ -19,6 +19,7 @@ set(atracdenc_ut
     ${CMAKE_SOURCE_DIR}/src/transient_detector_ut.cpp
     ${CMAKE_SOURCE_DIR}/src/transient_spectral_upsampler_ut.cpp
     ${CMAKE_SOURCE_DIR}/src/atrac/atrac_scale_ut.cpp
+    ${CMAKE_SOURCE_DIR}/src/atrac/atrac_psy_common_ut.cpp
 )
 
 add_executable(atracdenc_ut ${atracdenc_ut})