feat: root paden toegevoegd aan endpoints

backend/src/routes/submission.ts

@@ -1,6 +1,16 @@
 import express from 'express'
 const router = express.Router();
 
+// root endpoint used to search objects
+router.get('/', (req, res) => {
+    res.json({
+        submissions: [
+            '0',
+            '1',
+        ]
+    });
+});
+
 // information about an submission with id 'id'
 router.get('/:id', (req, res) => {
     res.json({