* added testing
* github action for python, made mypy happy
* formatted with black
* minor fixes and styling
* test model cache
* cache test dependencies
* narrowed model cache tests
* moved endpoint tests to their own class
* cleaned up fixtures
* formatting
* removed unused dep
* basic refactor and styling
* removed batching
* module entrypoint
* removed unused imports
* model superclass, model cache now in app state
* fixed cache dir and enforced abstract method
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Co-authored-by: Alex Tran <alex.tran1502@gmail.com>