refactor: 💡 implement new pathing for groups

addons/api/addon/adapters/group.js

@@ -0,0 +1,13 @@
+import ApplicationAdapter from './application';
+
+export default class GroupAdapter extends ApplicationAdapter {
+
+  // =attributes
+
+  /**
+   * Groups use the new, unprefixed pathing style.
+   * @override
+   */
+  hasScopePrefix = false;
+
+}

addons/api/addon/serializers/group.js

@@ -2,6 +2,14 @@ import ApplicationSerializer from './application';
 
 export default class GroupSerializer extends ApplicationSerializer {
 
+  // =attributes
+
+  /**
+   * Serialized the scope ID into the `scope_id` field.
+   * @type {boolean}
+   */
+  serializeScopeID = true;
+  
   // =methods
 
   /**