Add Vercel configuration for domain verification

domains/_vercel.shreyashswami.json

@@ -0,0 +1,9 @@
+{
+    "owner": {
+        "username": "Shreyash0712",
+        "email": "shreyash.swami2476@gmail.com"
+    },
+    "records": {
+        "TXT": "vc-domain-verify=shreyashswami.is-a.dev,4f896cfcece6df61f9ee"
+    }
+}