feat: bring tags back

[gikf]

• [x] I have read Chapter's contributing guidelines.
• [x] My pull request has a descriptive title (not a vague title like Update README.md).
• [x] My pull request targets the main branch of Chapter.

Ref #2188

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• Tags are kept in single table.
• chapter_tags, event_tags, venue_tags are referencing tag to object.
• Chapter, Event, Venue tags. Seeded, displayed, possible to add when creating chapter, event, venue, and edit.
• There's a bit play around with adding *_tags field to the graphql-type objects. I tried to not add it where it's not needed, but some further shuffling might be useful later.
• TagsBox for consistent displaying of the tags.
• CreateChapterInputs and UpdateChapterInputs replaced with ChapterInputs.
• Added snapshot test for ChapterCard and EventCard with tags displayed.
• Added tags util functions with tests.
• Migration.

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