Ticket #1089: HRD signalling bug fixes

See merge request jvet/VVCSoftware_VTM!1656

Fix Ticket #1092 on partitioning signalling in encoder

See merge request jvet/VVCSoftware_VTM!1657

Fix a bug when ENABLE_SPLIT_PARALLELISM is equal to 1 for JVET-R0064

See merge request jvet/VVCSoftware_VTM!1658

Fix copy/paste error in cfg parsing

See merge request jvet/VVCSoftware_VTM!1655

Fix to signal bitrate and CPB size in HRD parameters
Fix to make sure the PT SEI is generated for every picture

JVET-R0185: Updating signalling related to OLS DPB parameters in VPS

Bug fix for MR !1634

See merge request !1651

Retrained CABAC initial values

See merge request !1654

Retrained on CTC bitstreams generated with VTM 9.0rc1

store sub-picture numbers, sizes, and locations with a picture, so that they can be fetched directly from redPic

Default initialize NALUnit when reading it

See merge request jvet/VVCSoftware_VTM!1649

fix msan error reported on accessing nalu.m_nuhLayerId (source/App/DecoderApp/DecApp.cpp:199)
created at source/App/DecoderApp/DecApp.cpp:77

JVET-R0058: the combination of RPR, subpictures, and scalability

See merge request jvet/VVCSoftware_VTM!1634

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

JVET-R0332: Grouping syntax elements in SPS based on slice type

See merge request jvet/VVCSoftware_VTM!1568

Modify chroma QP mapping table

See merge request jvet/VVCSoftware_VTM!1636

JVET-Q0397: Scalable nesting SEI for subpictures

See merge request jvet/VVCSoftware_VTM!1642

Fix #1068: bins counting issue

See merge request jvet/VVCSoftware_VTM!1641

JVET-R0078: cleanup for chroma tc and beta DBF offset in PPS, PH and SH

See merge request !1617

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

JVET-Q0404: add a flag to subpicture info SEI to indicate constant bitrate

See merge request jvet/VVCSoftware_VTM!1644

JVET-R0194: Constraint for referencing parameter set from different layer

See merge request jvet/VVCSoftware_VTM!1639

JVET-R0099: Proposal 2 and 3, DPB and HRD parameter signaling for OLS