feat: set login as welcome page

config.json

@@ -1,6 +1,9 @@
 {
-    "default_server_name": "gmoker.com",
+  "default_server_name": "gmoker.com",
-    "setting_defaults": {
+  "embedded_pages": {
-      "use_system_theme": true
+    "login_for_welcome": true
-    }
+  },
+  "setting_defaults": {
+    "use_system_theme": true
+  }
 }