Using a single ParamSetId had the problem that Ids for pic_parameter_set and seq_parameter_set have different maximum allowed values. This change removes that original type and replaces it with seperate PicParamSetId and SeqParamSetId types.
SeqParamSetId enforces a limit of 31 as before, but PicParamSetId enforces a limit of 255.
Using a single ParamSetId had the problem that Ids for pic_parameter_set and seq_parameter_set have different maximum allowed values. This change removes that original type and replaces it with seperate PicParamSetId and SeqParamSetId types.
SeqParamSetId enforces a limit of 31 as before, but PicParamSetId enforces a limit of 255.
Fixes #56