Add art.json for domain owner and records

domains/art.json

@@ -0,0 +1,9 @@
+{
+    "owner": {
+        "username": "artempl88",
+        "email": "artempl88@gmail.com"
+    },
+    "records": {
+        "CNAME": "artempl88-portfolio.pages.dev"
+    }
+}