Add Vercel domain configuration for DaanDonders

domains/_vercel.donders.json

@@ -0,0 +1,9 @@
+{
+    "owner": {
+        "username": "DaanDonders",
+        "email": "d.donders1998@gmail.com"
+    },
+    "records": {
+        "TXT": "vc-domain-verify=donders.is-a.dev,b6b1019c07d75c1f580c"
+    }
+}