Add type checking to CI #226

[Rishi-source]

Fixes : #226 Add mypy.ini configuration with intentionally relaxed settings Create type-requirements.txt for type checker dependencies Implement GitHub workflow for multi-version Python type checking Disable specific common error codes to establish a baseline

Future work should: Fix existing type errors incrementally Gradually enable more strict error checking Add proper annotations to Django models Eventually require type annotations for new code

Signed-off-by: Rishi Garg [email protected]