Revision of common api types

• Related issues:
• Requested reviewers:

Reason why this change is needed

• Revision of common_api_types.h:
  • Removal of unused defines
  • Removal of duplicated defines
  • Common API types should always start with ivas_/IVAS_
  • Define time-scaler constants at one common place
  • Removal of duplicated output buffer pcmBuf[] in the decoder application
  • Remove initArgStruct() from the encoder and move the init to parseCmdlIVAS_enc() to follow the decoder structure
  • avoid IVAS library includes in lib_util files

Description of the change

• Revision of common_api_types.h and includes in lib_util

Affected operating points

• All is BE