feat: Convert all query files to JS

packages/backend/src/graphql/queries/get-roles.ee.js

@@ -0,0 +1,9 @@
+import Role from '../../models/role';
+
+const getRoles = async (_parent, params, context) => {
+  context.currentUser.can('read', 'Role');
+
+  return await Role.query().orderBy('name');
+};
+
+export default getRoles;