Allow API key based authentication #120
Description
Allow users to use API keys from Komga to authenticate with the server. This would make it significantly easier for those using OIDC to use these clients.
Right now Komelia only allows users to authenticate with username and password. However, for OIDC users, a random password is generated, and its not a great experience to then have users change that random password to a known one, and now need to remember both the SSO password and this Komga specific password. That basically defeats the point of OIDC SSO, being able to have one login for all services.