feat: add support of cloudflare workers (#596)

examples/cloudflare-worker/src/index.ts

@@ -0,0 +1,19 @@
+import { Innertube } from "youtubei.js/cf-worker";
+
+export interface Env {}
+
+export default {
+  async fetch(
+    request: Request,
+    env: Env,
+    ctx: ExecutionContext
+  ): Promise<Response> {
+    // cannot initialize Innertube in global scope as it makes fetch requests
+    const yt = await Innertube.create();
+
+    const video = await yt.getInfo("jNQXAC9IVRw");
+    console.log("Video title is", video.basic_info.title);
+
+    return new Response("Hello World!");
+  },
+};