drm/amd/display: Implement block sequencing infrastructure for modular hardware opera...

drm/amd/display: Implement block sequencing infrastructure for modular hardware operations.

[why]
Hardware sequencer operations need better modularity and testability.
Current monolithic functions make it difficult to unit test individual
operations and create maintainable workflows.

[how]
Implement new hwss_add_* helper functions with standardized parameter structures.
Add block_sequence_state framework for execution context management.
Create cursor, info frame, DSC, and stream encoder sequence functions with
comprehensive unit test support.

Reviewed-by: Alvin Lee <alvin.lee2@amd.com>
Signed-off-by: Bhuvanachandra Pinninti <BhuvanaChandra.Pinninti@amd.com>
Signed-off-by: James Lin <pinglei.lin@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>