Merge branch 'master' into 'JVET-AG0322-ModalityInfoSEI'

cfg/sei_vui/text_description_information.cfg

doc/software-manual.tex

source/App/EncoderApp/EncApp.cpp

source/App/EncoderApp/EncAppCfg.cpp

source/App/EncoderApp/EncAppCfg.h

source/Lib/CommonLib/RdCost.cpp

source/Lib/CommonLib/RdCost.h

source/Lib/CommonLib/SEI.cpp

source/Lib/CommonLib/SEI.h

source/Lib/CommonLib/SEINeuralNetworkPostFiltering.cpp

source/Lib/CommonLib/TypeDef.h

source/Lib/CommonLib/UnitTools.cpp

source/Lib/CommonLib/UnitTools.h

source/Lib/DecoderLib/SEIread.cpp

source/Lib/DecoderLib/SEIread.h

source/Lib/DecoderLib/VLCReader.cpp

source/Lib/EncoderLib/EncCfg.h

source/Lib/EncoderLib/SEIEncoder.cpp

source/Lib/EncoderLib/SEIwrite.cpp

source/Lib/EncoderLib/SEIwrite.h