audio/picard-plugins: Update to snapshot from 2022-02-14
Add DOCS option and install documentation in ${DOCSDIR}.
New plugins:
- submit_isrc (submit ISRCs found in audio files metadata)
Removed plugins:
- videotools (provided formats are non-functional and the is_video() and is_audio() functions are part of Picard)
Additional info can be found at: https://picard.musicbrainz.org/plugins/