Add Vercel configuration for domain verification

domains/_vercel.bappadityakuilya.json

@@ -0,0 +1,9 @@
+{
+  "owner": {
+    "username": "Bappaditya-kuilya",
+    "email": "bappadityakuilya@gmail.com"
+  },
+  "records": {
+    "TXT": "vc-domain-verify=bappadityakuilya.is-a.dev,c68b17560946058bd63c"
+  }
+}