PoC with response and API caching

[lwesterhof]

This PR adds caching for Flask responses to avoid re-rendering templates, improving performance. It introduces API caching for a limited set of endpoints with defined timeouts.

Additionally, some API calls have been moved to the client side to leverage the template cache, further enhancing efficiency. Certain API calls will trigger cache clearing to ensure users receive up-to-date information.

[FuHsinyu]

Perhaps it is already in your TODOs, a note is that I encountered an error of flask_session version is outdated in the requirement.txt. Thus, importing flask_session.filesystem reported an error. Upgrading flask_session to 0.8.0 resolved the issue.

[lwesterhof]

Yeah, I already upgraded the versions in development. Will merge with this branch soon.

[claravox]

Suggested change

	:param api_key: Optional custom key indentifying API endpoint. If None, defaults to request endpoint and method
	:param api_key: Optional custom key identifying API endpoint. If None, defaults to request endpoint and method

[FuHsinyu]

In make_key and clear_view_cache_keys, you both used user = g.get, is_dev =... and user identifier. I would suggest to have a single helper function to put them together, like:

def get_user_identifier():
    user = g.get('user')
    if not user:
        return "unauthenticated"
    is_development = app.config.get("YODA_ENVIRONMENT") == "development"
    return user if is_development else hashlib.shake_256(...).hexdigest(20)

Then you can just call them inside each func.