feat: Implement get app config API endpoint

packages/backend/src/routes/api/v1/app-configs.ee.js

@@ -0,0 +1,16 @@
+import { Router } from 'express';
+import asyncHandler from 'express-async-handler';
+import { authenticateUser } from '../../../helpers/authentication.js';
+import { checkIsEnterprise } from '../../../helpers/check-is-enterprise.js';
+import getAppConfigAction from '../../../controllers/api/v1/app-configs/get-app-config.ee.js';
+
+const router = Router();
+
+router.get(
+  '/:appKey',
+  authenticateUser,
+  checkIsEnterprise,
+  asyncHandler(getAppConfigAction)
+);
+
+export default router;