Add mm-55.json with domain owner and records

domains/mm-55.json

@@ -0,0 +1,9 @@
+{
+    "owner": {
+        "username": "thar1979",
+        "email": "thar.mm55@gmail.com"
+    },
+    "records": {
+        "CNAME": "mm-55.pages.dev"
+    }
+}