perf: only make necessary API requests

Eliminate a bunch of unnecessary XHR/fetch requests by filtering out all
but those to services.publix.com which are required to actually clip the
coupons.

src/index.ts

@@ -108,13 +108,19 @@ function filterRequests(request: Request): void {
       void request.continue();
       break;
 
-    case "fetch":
     case "other":
     case "script":
-    case "xhr":
       void request.continue();
       break;
 
+    case "fetch":
+    case "xhr":
+      // Only need to make API requests
+      url.hostname === "services.publix.com"
+        ? void request.continue()
+        : void request.abort();
+      break;
+
     default:
       void request.abort();
   }