Add Vercel configuration for domain verification

domains/_vercel.saqin.json

@@ -0,0 +1,9 @@
+{
+    "owner": {
+        "username": "SaqinNoor",
+        "email": "akmsaqinnoor@gmail.com"
+    },
+    "records": {
+        "TXT": "vc-domain-verify=saqin.is-a.dev,175541caa8940827ace3"
+    }
+}