feat: Access Cloudflare Bindings

[KitsuneDev]

Hello there, I hope all of you are doing well.

CloudFlare Workers/Pages passes an extra parameter to the request handler, namedly env, which is received at cfworker.ts, but nothing seems to be done with it.

Given that access to many CloudFlare features, such as D1 databases and many others, as can be seen here require the use of this object, should a canon/standard way of accessing this be implemented into the framework?