Add a way to get woocommerce version (#2126)

This can be tested [here](https://puri.sm/products/)

src/apps.json

@@ -10683,7 +10683,10 @@
       "js": {
         "woocommerce_params": ""
       },
-      "html": "<!-- WooCommerce",
+      "html": [
+        "<!-- WooCommerce",
+        "<link rel='[^']+' id='woocommerce-(?:layout|smallscreen|general)-css'  href='https?://[^/]+/wp-content/plugins/woocommerce/assets/css/woocommerce(?:-layout|-smallscreen|)\\.css?ver=([\\d.]+)'\\;version:\\1"
+      ],
       "icon": "WooCommerce.png",
       "implies": "WordPress",
       "meta": {