So users do not have to analyze the code for this line https://github.com/9p4/jellyfin-plugin-sso/blob/c6cac45004a32a7d8cf5863102ef947f792ed021/SSO-Auth/Api/SSOController.cs#L67
* Document provider configuration * Link to provider documentation in readme, remove warning about gui * Add Keycloak + cleanup * Linting * Fix authelia -> authentik * lint * Rename Authentik -> authentik Co-authored-by: Sambhav Saggi <17993169+9p4@users.noreply.github.com>