Authentik automatic login support (#4600)

* feat: authentik auto login

* refactor: move SSO login configuration under sso section in config

* Migrate SSO config keys read

---------

Co-authored-by: Cohee <18619528+Cohee1207@users.noreply.github.com>

default/config.yaml

@@ -82,18 +82,30 @@ requestProxy:
 enableUserAccounts: false
 # Enable discreet login mode: hides user list on the login screen
 enableDiscreetLogin: false
-# Enable's authlia based auto login. Only enable this if you
-# have setup and installed Authelia as a middle-ware on your
-# reverse proxy
-# https://www.authelia.com/
-# This will use auto login to an account with the same username
-# as that used for authlia. (Ensure the username in authlia
-# is an exact match in lowercase with that in sillytavern)
-autheliaAuth: false
 # If `basicAuthMode` and this are enabled then
 # the username and passwords for basic auth are the same as those
 # for the individual accounts
 perUserBasicAuth: false
+
+# -- SSO LOGIN CONFIGURATION --
+sso:
+  # Enable's authlia based auto login. Only enable this if you
+  # have setup and installed Authelia as a middle-ware on your
+  # reverse proxy
+  # https://www.authelia.com/
+  # This will use auto login to an account with the same username
+  # as that used for authlia. (Ensure the username in authlia
+  # is an exact match in lowercase with that in sillytavern)
+  autheliaAuth: false
+  # Enable's authentik based auto login. Only enable this if you
+  # have setup and installed Authentik as a middle-ware on your
+  # reverse proxy.
+  # https://goauthentik.io/
+  # This will use auto login to an account with the same username
+  # as that used for authentik. (Ensure the username in authentik
+  # is an exact match in lowercase with that in sillytavern).
+  authentikAuth: false
+
 # Host whitelist configuration. Recommended if you're using a listen mode
 hostWhitelist:
   # Enable or disable host whitelisting