JVET-AG0089: Temporal extrapolation purpose for the neural-network post-filter characteristics SEI message

Includes:
- fix syntax element names for tracing
- add validation checks
- move validation check to correct place
- define `enum HrdType` for indexing by `NAL` or `VCL`
- consistently use `bp` variable name for BP SEI objects
- use `static_vector` instead of having separate variable for array size

Wei Jia authored 1 year ago and Karsten Suehring committed 1 year ago

JVET-AF0061, JVET-AF0174, JVET-AF0067, and JVET-AF0310: add po_id into the SEI processing order (SPO) SEI message

JVET-AE0048 item 1: Add missing value ranges for nnpfc_pic_width_num_minus1, nnpfc_pic_width_denom_minus1, nnpfc_pic_height_num_minus1, and nnpfc_pic_height_denom_minus1

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.