Port CS mem reduction from ecm/ECM!525

See merge request jvet/VVCSoftware_VTM!2683

Free vector data memory when destroying CodingStructure buffers

See merge request jvet/VVCSoftware_VTM!2687

JVET-AE0156: Message wrapping and importance indication for the SEI processing order SEI message

See merge request jvet/VVCSoftware_VTM!2680

Fix #1612: PO-SEI message

See merge request jvet/VVCSoftware_VTM!2679

Fix #1616: NNPFC SEI nnpfc_chroma_sample_loc_type_frame value is checked even when not signalled

See merge request jvet/VVCSoftware_VTM!2681

Clean up IBC-related code

See merge request jvet/VVCSoftware_VTM!2678

Update software manual on max transform size (#1614)

See merge request jvet/VVCSoftware_VTM!2677

FIX #1613: Fix transform skip cost for non-CTC conditions

See merge request jvet/VVCSoftware_VTM!2676

FIX #1611: use pic->reconstructed and pic->layerId for computing HashME condition

See merge request jvet/VVCSoftware_VTM!2675

Reduce memory for ALF covariance data

See merge request jvet/VVCSoftware_VTM!2672