Add Vercel domain verification configuration

domains/_vercel.shyamsundar.json

@@ -0,0 +1,11 @@
+{
+  "description": "Vercel domain verification for shyamsundar.is-a.dev",
+  "repo": "https://github.com/ShyamSundar2705/portfolio",
+  "owner": {
+    "username": "ShyamSundar2705",
+    "email": "shyamarunach@gmail.com"
+  },
+  "records": {
+    "TXT": "vc-domain-verify=shyamsundar.is-a.dev,793e6ea26db09601b463"
+  }
+}