feat(backend): Added endpoint to fetch HTML version of learning object (from Dwengo backend)

Also refactored a bit to make this easier.

backend/src/routes/learning-objects.ts

@@ -1,8 +1,8 @@
 import express from 'express';
 import {
     getAllLearningObjects,
-    getLearningObject,
-} from '../controllers/learningObjects.js';
+    getLearningObject, getLearningObjectHTML,
+} from '../controllers/learning-objects.js';
 
 const router = express.Router();
 
@@ -24,4 +24,10 @@ router.get('/', getAllLearningObjects);
 // Example: http://localhost:3000/learningObject/un_ai7
 router.get('/:hruid', getLearningObject);
 
+// Parameter: hruid of learning object
+// Query: language, version (optional)
+// Route to fetch the HTML rendering of one learning object based on its hruid.
+// Example: http://localhost:3000/learningObject/un_ai7/html
+router.get('/:hruid/html', getLearningObjectHTML);
+
 export default router;

backend/src/routes/learning-paths.ts

@@ -1,5 +1,5 @@
 import express from 'express';
-import { getLearningPaths } from '../controllers/learningPaths.js';
+import { getLearningPaths } from '../controllers/learning-paths.js';
 
 const router = express.Router();