Starts Notifications feature. Missing to send email with runtime configs.

database/migrations/2023_03_20_112813_create_instance_settings_table.php

@@ -27,6 +27,9 @@ return new class extends Migration
             // $table->boolean('is_dns_check_enabled')->default(true);
             $table->boolean('is_registration_enabled')->default(true);
             $table->boolean('is_https_forced')->default(true);
+
+            $table->schemalessAttributes('extra_attributes');
+
             $table->timestamps();
         });
     }