feat(cloudflare): Add support for email, queue, and tail handler

[AbhiPrasad]

Cloudflare workers have a variety of handlers you can define for different functionality: https://developers.cloudflare.com/workers/runtime-apis/handlers/

Right now our instrumentation wraps the fetch and scheduled handlers. This PR extends our instrumentation to also wrap the queue, email, and tail handler.

We only create spans for queue and email, but not for tail because its meant as a debugging/analytics endpoint. We can introduce spans in tail handler if there is demand in the future.

We need to add this wrapping, otherwise users cannot use the SDK in these handlers because of how the cloudflare isolation model works (fetch handler is completed isolated from email and queue handlers, so we need to wrap every handler individually).