Proto commits in kokarare1212/librespot-python

These 4 commits are when the Protocol Buffers files have changed:

Commit:9481c1c
Author:Googolplexed0

have get_metadata_4_track() call new get_ext_metadata() TODO: parsing a successful response always returns a 400 response

The documentation is generated from this commit.

Commit:e909cfd
Author:dakba

feat: add FLAC lossless format support and refactor quality pickers (while staying backward compatible) - Add `FLAC_FLAC` (16), `FLAC_FLAC_24BIT` (22) format codes (based on librespot-org/librespot#796, librespot-org/librespot#1424) - Regenerate Metadata_pb2.py with protoc 3.20.1 - Add enums: `SuperAudioFormat.FLAC`, `AudioQuality.LOSSLESS` - Refactor to generic DRY `FormatOnlyAudioQuality` base class while maintaining existing `VorbisOnlyAudioQuality` as wrapper - Remove `AAC_24_NORM` (replaced by `FLAC_FLAC` at code 16)

Commit:b28e684
Author:kokarare1212

#135 Add ClientToken support

Commit:01dae8a
Author:kokarare1212

Initial Commit