Add JSON-LD taxonomy validation to CI

[imbrou]

This PR adds automated validation for JSON-LD taxonomy files to ensure they follow DFC naming conventions.

Changes

.
├── .github
│   └── workflows
│       ├── validate-taxonomies.yml
│       └── scripts
│           └── validate_taxonomy.py

Description

• Adds a GitHub Actions workflow to validate all JSON files
  • Triggers when a pull request to main is created AND contains (edits or adds) a JSON file
• Validates:
  • JSON-LD syntax
  • URI naming patterns (alphanumeric, starts with letter)
  • Class names use PascalCase
  • Property names use camelCase

Testing Done

Tested against current taxonomies:

• facets.json
• measures.json
• productTypes.json
• vocabulary.json

Here is the result of this test, to validate before merging this PR.

Breaking Changes

None. This only adds CI validation.

Next steps

• Configure the repo to prevent the merge of PRs on main if the CI fails.

[RaggedStaff]

Thanks @imbrou

This looks great!

Just looking at the test output and I'm wondering if we could have more meaningful error messages?

Currently is failing on the aplhanum check & giving the same Must be alphanumeric, starting with a letter message for everything.

Could we split it out & have separate messages for ?:

• Remove all non-alphanumeric characters
• Must start with an lowercase letter

Also noting - we are envisaging that Id's will correspond (as closely as possible) to the english skos:prefLabel. In the future would be nice to have a warning if the label isn't similar to the id. 🤔 Not urgent - we're catching the auto-generated Id's due to the underscore.