Validator output should go to the mismatch finder tool

[marfox]

In the form of CSV files to the mismatch store: https://github.com/wmde/wikidata-mismatch-finder/blob/main/docs/UserGuide.md
https://github.com/wmde/wikidata-mismatch-finder/blob/main/docs/exampleMismatchFile.csv
Once they get curated, the bot can upload them to Wikidata.

The first step is to prepare a CSV sample suitable for the tool.
Input: QID,property_id,external_value,external_id
Output: statement_guid,property_id,wikidata_value,external_value,external_url

Given the MusicBrainz musician dataset from criterion 3, for each row:

• get the statement GUID and the Wikidata value
• prefix the external ID with https://musicbrainz.org/artist/
• take into account Fix bio validation quirks #433

[marfox]

Submitted the following samples to Lydia:

• musicbrainz_mismatches.csv
• json_values_musicbrainz_mismatches.csv

They come from criterion 3, MusicBrainz target; the latter has JSON object values, Wikidata REST APIs format.