refactor: 💡 implement new pathing for auth methods

addons/api/addon/serializers/auth-method.js

@@ -0,0 +1,13 @@
+import ApplicationSerializer from './application';
+
+export default class AuthMethodSerializer extends ApplicationSerializer {
+
+  // =attributes
+
+  /**
+   * Serialized the scope ID into the `scope_id` field.
+   * @type {boolean}
+   */
+  serializeScopeID = true;
+  
+}