Revert "Revert "Merge branch 'f-extend-yaml-model' into 'dev'""

Summary

For #72 (closed). Repairs the previous MR which introduced the role and value keywords into the yaml model.

Focus

For the actual changes after the reversion of the revert, have a look at https://gitlab.indiscale.com/caosdb/src/caosdb-advanced-user-tools/-/merge_requests/36/diffs?diff_id=5835&start_sha=619c25e6214aaeb5f91f10252a8dda104b0e46b5. Note that role: File is postponed until later (#74), as is the implementation of the valued_properties keyword (#75).

Test Environment

New unit tests and integration tests (use with the debug profile of caosdb-deploy as described in README_SETUP.md). Depending on your level of paranoia, you can also test it with the AWI server profile:

1. Check out server-profile in local-testing-main and update (and init, if necessary) the integration test submodule.
2. Run integration-tests/tests/test.sh

Check List for the Author

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• All automated tests pass
• Reference related issues
• Up-to-date CHANGELOG.md (or not necessary)
• Annotations in code (Gitlab comments)
  • Intent of new code
  • Problems with old code
  • Why this implementation?

Check List for the Reviewer

• I understand the intent of this MR
• All automated tests pass
• Up-to-date CHANGELOG.md (or not necessary)
• The test environment setup works and the intended behavior is reproducible in the test environment
• In-code documentation and comments are up-to-date.
• Check: Are there specifications? Are they satisfied?

For further good practices have a look at our review guidelines.