Proper Logging

[burturt]

Right now, almost everything is ephemeral, and as such, if something happens, we won't know what happened. As such, we need proper logging for:

• All login events: failed login, successful login with details
• Challenge status updates: challenge deployed, extended, cancelled, and for per-team challenges, include the exact challenge details

[bliutech]

@burturt Does app.logger suffice or would you like a custom data structure with more fields?

https://flask.palletsprojects.com/en/2.3.x/logging/