Add Vercel configuration for domain verification

domains/_vercel.heyshaquib.json

@@ -0,0 +1,9 @@
+{
+    "owner": {
+        "username": "heyshaquib",
+        "email": "heyshaquib.dev@proton.me"
+    },
+    "records": {
+        "TXT": "vc-domain-verify=heyshaquib.is-a.dev,59f6ea72a56bcb6bfa68"
+    }
+}