Investigate replacing Flask with an ASGI framework

[ReenigneArcher]

Describe the Bug

Flask is a WSGI based framework. This doesn't allow asynchronous calls and can be slow.

While RetroArcher does not require many simultaneous connections or calls, let's investigate replacing it with an ASGI framework. While the app is still relatively small it will be easier to replace.

Expected Behavior

No response

Additional Context

quart appears to be mostly a drop in replacement for Flask.

RetroArcher Server Operating System and Version

RetroArcher Version