SAML Authentication

[Weilbyte]

Is your feature request related to a problem? Please describe.
It would be nice if Pterodactyl could leverage SAML authentication. As an example, could probably use Cloudflare Access.

Describe the solution you'd like
SAML authentication support.

Describe alternatives you've considered
LDAP would be a close alternative, there is already an issue out for that. Though you can log into Microsoft AD without LDAP through the use of Azure AD connections. Could even go further and log in with SAML through the use of Cloudflare Access with an Azure AD auth application.

Additional context
Understandably y'all probably don't have time for this feature as you have more important work. Just leaving this issue here in case I want to pick this up in like a few weeks or so.

[Wunderharke]

Most provides of SAML also provide OIDC, there is already a pull request (#1964) on that, this could be an alternative until SAML might get integrated.

[matthewpi]

Closing, SAML itself is complex regardless of if libraries for it exist. If any type of SSO is to be added officially, it would be through OAuth2 or OIDC which almost every SSO provider seems to offer.