Add Vercel configuration for domain verification

domains/_vercel.oussamaelasri.json

@@ -0,0 +1,9 @@
+{
+    "owner": {
+        "username": "OussamaEl-Asri",
+        "email": "oussamaasri80@gmail.com"
+    },
+    "records": {
+        "TXT": "vc-domain-verify=oussamaelasri.is-a.dev,083628f95e59275703f6"
+    }
+}