- LFNST signaling depending on transform skip flags
- disabling chroma LFNST for single tree
- additional scaling condition for LFNST

1. enabling the encoder-side RD check of ISP mode when ACT is disabled at CU level
2. ACT intra RD code clean-up

Enable BDPCM for Chroma for 444.

Remove TransformShift in TS mode.

Add a description of ChromaTS into the software manual.

Remove unused parameters and remove default parameter values

This reduces the number of dynamic allocations

It cleans up old ISP code that is no longer used anymore. The code was used to allow only one ISP split depending on the block size. However, this functionality is not needed anymore after the adoption of JVET-N0308 during the Geneva Meeting in March, which limited the usage of ISP to CUs with a maximum size of 64x64 samples. This clean-up eliminates various unnecessary checks and improves the readability of the code.

JVET-O0219: LFNST transform set selection for a CCLM coded block. Remove duplicate code. Fix a bug due to convert MIP mode to convensional mode