feat(domain): error404.is-a.dev

domains/error404.json

@@ -0,0 +1,9 @@
+{
+    "owner": {
+        "username": "roktim32",
+        "email": "roktimsenapoty2@gmail.com"
+    },
+    "record": {
+        "CNAME": "roktim32.github.io"
+    }
+}