Linting/Formatting of middleware folder

[Snuffy2]

This pull request refactors the RequestTrackingMiddleware in app/middleware/request_tracking.py to improve type safety, update error logging, and clarify documentation. The main changes focus on using more precise type annotations, enhancing error logging, and cleaning up the request handling logic.

Type annotation improvements:

• Updated the type annotation for the call_next parameter in the dispatch method to use Callable[[Request], Awaitable[Response]] for better type safety. [1] [2]
• Added explicit type annotation for the response variable, clarifying its type as Response.

Error handling and logging enhancements:

• Changed error logging from logger.error to logger.exception to automatically include stack traces for better debugging. Also removed the redundant exc_info=True argument.
• Simplified error message formatting and removed direct exception string interpolation, focusing on duration and request details.

Documentation improvements:

• Updated the docstring for the dispatch method to use a more standard format with section headers for arguments and return values.