[core, lua, sql] YAML as static data source; enums codegen; schema validation

[sruon]

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• I have tested my code and the things my code has changed since the last commit in the PR and will test after any later commits.

What does this pull request do?

• Introduce YAML (rapidyaml) as the source of truth for static data (replacing SQLs) and enums (replacing hand-written enums in lua/C++)
• Introduce JSON schemas attached to each YAML, enabling first class auto-completion and validation right in the IDE and CI
• Introduce machinery to codegen enums and data loading PODs from said YAMLs
• Wires CI to validate YAMLs on PRs
• Migrates status effects

See this Gist for rationale and design
See this repository for an example of codegen'd files

I'll need to cleanup the existing C++ enums separately, the PR would be way too noisy otherwise.

If you can't build xi_map after this is merged, you most likely need to update your python dependencies

pip install -r tools/requirements.txt

Steps to test these changes

Run xi_map, see

[data] status_effects 668 entries loaded in 10ms