Typecasting in IVAS_DEC_Configure()

There is present a typecasting when calling function IVAS_DEC_Configure(): several input parameters are defined as bool while the function itself defines them as int16_t. It would be cleaner to do the data type conversion implicitly. I am however not clear about the importance of such an issue.

Note that the issue exists only in the decoder application, the encoder is fine and the renderer uses a different structure.