Add _vercal.pheonix.json for domain verification

domains/_vercal.pheonix.json

@@ -0,0 +1,9 @@
+{
+    "owner": {
+        "username": "Hardik-Verma",
+        "email": "hardikverma1902@gmail.com"
+    },
+    "records": {
+        "TXT": "vc-domain-verify=pheonix.is-a.dev,aac5c505cf83b572144e"
+    }
+}