m43953/hls: implement sps, gps, aps syntax structures and tlv fileformat
This commit rewrites the codec high-level syntax: - the bitstream is divided into "bricks" (akin to an AVC/HEVC slice/tile). - sequence, geometry and attribute parameter sets describe the coding parameters in use generally and for a specific brick. - marshalling the bitstream payloads to a file format is achieved using a type-length-value encoding scheme. Additionally, the triSoup bitstream scale and translation values have been unified with (replaced by) the octree counterparts. For compatibility, existing command line parameters continue to function as before. NB: this commit does not incorporate flexibility in the decoding order. The decoder requires the bitstream to be presented in a fixed order.