Add Vercel configuration for domain verification

domains/_vercel.mubashirm.json

@@ -0,0 +1,9 @@
+ {
+  "owner": {
+    "username": "mubashirmuchi",
+    "email": "mubashirmuchi75@gmail.com"
+  },
+  "records": {
+    "TXT": "vc-domain-verify=mubashirm.is-a.dev,fd808840c93eaf428afe"
+  }
+}