[Feature Request] Option to disable password logins

[bstanwell]

Describe the Feature
An option in the authentication menu to disable logins with username/password, so that users can only log with an external provider (discord/authentik etc.)
This may help with hardening access and creating an easy password-less login process.

Where to Create
Steps to reproduce the behavior:

1. Go to '../Settings/Authentication'
2. Have a switch in Authentication called "Disable Password Authentication"

Expected behavior
Would remove login elements on the start page except for the log in with provider button

Additional context
May need to have a lock out if the user hasn't correctly setup a external provider, or maybe even locking this in a config file external to the web interface

[pathartl]

Settings/Authentication has an option for auto-redirecting users to an external authentication provider. Any reason to not use that?

[bstanwell]

This works for the launcher client, however this behaviour is inconsistent with the web client, and users can still attempt to login with a password after the redirect.

Additionally it would be good to have a method to harden the login process, and force external providers would be easier to implement then native MFA