Bitstream Switching (Decoder side)

From IVAS PC Candidate Planning, 2022-09-15, the most important missing building blocks:

•	Bitstream Switching (Decoder side) (Prio low)
   o	Task: concatenate bitstreams with different formats, feed to decoder; decoder should reset and produce reasonable output (VoiceAge)
   o	Task: Evaluate impact of decoder reset and re-initialization (VoiceAge)