Fix broken blueprint (Automattic#65)

Change `pluginZipFile` to `pluginData` in install step of blueprint, add `WP_DEBUG` for error logs, bump PHP version to 8.1

Author: alecgeatches

blueprint.json

@@ -2,14 +2,20 @@
   "$schema": "https://playground.wordpress.net/blueprint-schema.json",
   "landingPage": "/wp-admin/admin.php?page=vw-custom-status",
   "preferredVersions": {
-    "php": "8.0",
+    "php": "8.1",
     "wp": "latest"
   },
   "features": {
     "networking": true
   },
   "login": true,
   "steps": [
+    {
+      "step": "defineWpConfigConsts",
+      "consts": {
+        "WP_DEBUG": true
+      }
+    },
     {
       "step": "installPlugin",
       "pluginData": {