fix: require a key when creating or updating models

[Joltras]

Proposed changes

Models could be created without a key, which left entries in the database that the generator can't use. The key is now required when creating or updating attributes, fonts, items, sounds, advancements, dimensions and projects.Requests without a key are rejected with a 400 instead of being saved. Sound and font fields that were wrongly blocked can be set again.Added tests for the missing-key cases.

Types of changes

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• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation Update (if none of the other choices apply)

Checklist

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• I have read the CONTRIBUTING.md
• I have added tests that prove my fix is effective or that my feature works
• I have added necessary documentation (if appropriate)

[github-actions]

Test results

  138 files    138 suites   1m 9s ⏱️
  348 tests   339 ✅  9 💤 0 ❌
1 123 runs  1 048 ✅ 75 💤 0 ❌

Results for commit 9638310.