API: Unified authentication and logging middleware

[martastain]

This pull request involves significant changes to the authentication middleware and the initialization of the server, focusing on refactoring and improving the codebase. The most important changes include the removal of deprecated dependencies, the addition of new authentication methods, and the restructuring of the server initialization process.

• Added new authentication middleware to handle user authentication via API keys and access tokens, including methods to extract tokens from requests and validate them.
• Refactored the dep_current_user and dep_current_user_optional functions to use the new authentication middleware, removing redundant code and improving clarity.
• Introduced a new lifespan management module to handle server startup and shutdown processes, including loading access groups, starting background tasks, and initializing addon endpoints.
• Updated the server initialization to use the new lifespan module and added the new authentication middleware, removing the old logging middleware.

Improved logging

The new authentication middleware updates the log context, so all log messages produced by calling endpoints now contain information about the current user and the response status and can be matched by request_id

In the following example, users changes the status of an entity. example addon that listens to status_changed events processes the emitted event after the request ended, but logging messages triggered still contain the original context.