introduce blueprint.json for WP playground preview

assets/blueprints/blueprint.json

@@ -0,0 +1,36 @@
+{
+  "$schema": "https://playground.wordpress.net/blueprint-schema.json",
+  "landingPage": "/wp-admin/options-general.php?page=statify-blacklist",
+  "features": {
+    "networking": true
+  },
+  "steps": [
+    {
+      "step": "login",
+      "username": "admin",
+      "password": "password"
+    },
+    {
+      "step": "installPlugin",
+      "pluginZipFile": {
+        "resource": "wordpress.org/plugins",
+        "slug": "statify"
+      }
+    },
+    {
+      "step": "activatePlugin",
+      "pluginPath": "statify/statify.php"
+    },
+    {
+      "step": "installPlugin",
+      "pluginZipFile": {
+        "resource": "wordpress.org/plugins",
+        "slug": "statify-blacklist"
+      }
+    },
+    {
+      "step": "activatePlugin",
+      "pluginPath": "statify-blacklis/statify-blacklist.php"
+    }
+  ]
+}