[feat] infinite scroll on inventory

src/pages/partials/inventory-cards.astro

@@ -137,4 +137,16 @@ console.log(`totalHits: ${totalHits}`);
     </div>
     );
 
-})
+})}
+{start + 20 < totalHits &&
+    <div
+        hx-post="/partials/inventory-cards"
+        hx-trigger="revealed"
+        hx-vals={JSON.stringify({ start: start + 20, catalog, q: query })}
+        hx-target="#gridView"
+        hx-swap="beforeend"
+        hx-on--after-request="this.remove()"
+    >
+        Loading...
+    </div>
+}