[update] see presentation from 2023.04.20:

- enable quaternion support
- enabled pre-rendering mode in IVAS_rend
- bugfix for discontinuities
- update to use EFAP polygon panning for 2DOF correction
- enable extrapolation over entire yaw axis for 1DOF and 2DOF correction
- added script to generate example commandlines at
  scripts/split_rendering/lc3plus/split_rend_lc3plus_cmdlines.py