Fix access to unitialized value in SPS

See merge request !2647

Use PLTRunMode instead of bool for palette data

See merge request jvet/VVCSoftware_VTM!2646

JVET-AE0162: fix MS-SSIM calculation for RPR/SR

See merge request !2644

JVET-AE0057: MTT split modes early termination

See merge request !2645

JVET-AE0180: Add missing condition on PIC_RECON_WRAP buffer allocation

See merge request !2639

Define JVET_AE0057_MTT_ET is placed at the appropriate location in Typedef.h
The Luma channel test condition is updated EncCu.cpp
The threshold value lower range is clipped to 0 instead of allowing it to take negative values.
JVET document number information is removed

# Conflicts:
#	source/Lib/CommonLib/TypeDef.h

The proposal JVET-AE0057 is implemented under the define JVET_AE0057_MTT_ET in VTM software. A config file parameter (MTTSkipping) is also added to turn on or off the MTT early termination. The 64x64 luma CU no-split intra RD cost is compared against a threshold to decide whether to evaluate MTT splitting for current 64x64 luma CU.

JVET-AE0060: Signal nnpfc_chroma_loc_info_present_flag only when nnpfc_out_order_idc is not equal to 0

See merge request !2643

JVET_AE0060_COND_SIG_INF: Signal nnpfc_chroma_loc_info_present_flag only when nnpfc_out_order_idc is not equal to 0 and infer nnpfc_chroma_loc_info_present_flag to be equal to 0 when not present.

Only one VPS can be active at any time

See merge request jvet/VVCSoftware_VTM!2641

Clean up data types in ALF code

See merge request !2638

remove macro JVET_Z0120_SII_SEI_PROCESSING

See merge request !2640

Remove macros from VTM 21 development cycle

See merge request !2637