Add domain configuration for ruingl

domains/_vercel.ruingl.json

@@ -0,0 +1,9 @@
+{
+    "owner": {
+        "username": "ruingl",
+        "email": "ruingl@proton.me"
+    },
+    "records": {
+        "TXT": "vc-domain-verify=ruingl.is-a.dev,5655632f0c102faa07bb"
+    }
+}