Alf cleanup

See merge request jvet/VVCSoftware_VTM!735

Cosmetic/Consistency change of the name of the variable 'prevCbCbf' to 'prevCbf' in several places

See merge request jvet/VVCSoftware_VTM!726

Fix inconsistent behaviour between getTU and const getTU

See merge request jvet/VVCSoftware_VTM!728

Fix #386: JVET-O0272 with alignment between SW and text and one corner case bug fixed

See merge request jvet/VVCSoftware_VTM!733

replace AlfSliceParam by AlfParam and alfSliceParam by alfParam

Fixed decoder crash introduced by the combination of JVET-O0122 and JVET-O0619

See merge request !734

JVET-O0567: Constrain the signalled MVD value to the range of [-2^17, 2^17-1]

See merge request !722

JVET-O0122: Sign context, level mapping of TS residual coding

See merge request !720

JVET-O0432: LMCS encoder improvement

See merge request !721

JVET-O1136: Unified syntax for JVET-O0165/O0200/O0783 on TS and BDPCM signalling

See merge request !731

fix #381: align software with spec for O0428

See merge request jvet/VVCSoftware_VTM!730

Fix #380: JVET-O1109 improvement

See merge request jvet/VVCSoftware_VTM!729

JVET-O0594: BDOF reference sample padding using the nearest integer sample position

See merge request jvet/VVCSoftware_VTM!727

JVET_O0594/O0252/O0506/O0615/O0624: BDOF reference sample padding using nearest integer sample positions

JVET-O1168: cu chroma QP offset

See merge request jvet/VVCSoftware_VTM!710

JVET-O0193/O0375: remove transform depth in cbf ctx

See merge request !724

remove INCLUDE_ISP_CFG_FLAG macro (leftover from last meeting cycle)

See merge request !725

Note: in VVC draft 6 "–	If intra_bdpcm_flag[ ][ ] is equal to 1, ctxInc is set equal to 1.", which was set equal to 4 in VTM5. This integration also implements this change, to align cbf ctx with VVC draft 6.

JVET-O0163/JVET-O0588: Remove switching between L0 and L1 for temporal MV

See merge request jvet/VVCSoftware_VTM!644