Add support for Cloudflare WorkerEntrypoint

[AbhiPrasad]

Hi all, it's great to see Cloudflare Workers getting some attention. Cloudflare seem to be moving towards the WorkerEntrypoint/class-based approach. E.g., RPC methods (worker-to-worker requests) are only supported with WorkerEntrypoint: https://developers.cloudflare.com/workers/runtime-apis/bindings/service-bindings/rpc/#the-workerentrypoint-class

Are there plans to support this structure?

Originally posted by @CameronB15 in #12620

[hcharlie1201]

yo whats the update on this? This is needed currently because theres just no tracking for this..