feat(tealfm): Write MusicBrainz IDs for artists

[owendaprile]

Checklist before requesting a review

• I have read the contributing guidelines.

Type of change

• New feature (non-breaking change which adds functionality)

Describe your changes

This updates the teal.fm client to also write artistMbId alongside artistName as described in the lexicon.

This assumes that the order of artists in TrackData.artists and BrainzMeta.artist are the same, which appears to be the case from the other sources I checked.

For plays with empty/unmatched BrainzMeta.artist items, nothing will be written.

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[FoxxMD]

thanks for the contribution!

This assumes that the order of artists in TrackData.artists and BrainzMeta.artist are the same

The play artist field is something I've been meaning to refactor to avoid this assumption. I think this is correct for all cases at the moment but there's no gaurantee, and album artist parsing from various sources might mess this up.

I need to create some test cases for this first, or just do the refactor, to make sure this is safe.