Add MFA support

config/auth.config.js

@@ -3,6 +3,10 @@ const auth_config = {
     default_provider: env('AUTH_DEFAULT_PROVIDER', 'flitter'),
     default_login_route: '/dash',
 
+    mfa: {
+        secret_length: env('MFA_SECRET_LENGTH', 20)
+    },
+
     servers: {
         // OAuth2 authorization server
         oauth2: {