add favicon

Author: JacobLinCool

Diff for: favicon/leetcode.ico

@@ -17,6 +17,11 @@ async function handle_request(event) {
         return new Response("Allowed Method: GET");
     }
 
+    // for favicon
+    if (request.url == "https://leetcode-card.jacob.workers.dev/favicon.ico") {
+        return Response.redirect("https://raw.githubusercontent.com/JacobLinCool/leetcode-stats-card/main/favicon/leetcode.ico", 301);
+    }
+
     const final_parameters = parameters(new URL(request.url).searchParams);
     console.log("Final Parameters", final_parameters);