Add Xcode versions to `.setup_info`

data/setup-info-template.json

@@ -15,6 +15,10 @@
   {
     "group": "Software Detail",
     "detail": [
+      {
+        "name": "Xcode Versions",
+        "script": "xcodes installed --no-color || echo \"Xcode not installed\""
+      },
       {
         "name": "Python Version",
         "script": "python3 --version"