[Feature] Support email workers using Rust

[rkedward]

Is there an existing issue for this?

• [x] I have searched the existing issues

Description

Can we have support for email workers? I searched the docs and web can't find any examples how process emails using email workers in Rust.

[devnull03]

There is a PR #715 that is implementing this feature, it just hasn't been approved yet. I also wanted to use email worker, so I have the fork added as a git submodule (changed to the feature branch) in my repo and changed the Cargo.toml accordingly to use the local crate.

[dependencies]
worker = { path = "../workers-rs/worker", features=['http'] }
worker-macros = { path = "../workers-rs/worker-macros", features=['http'] }

(Your folder paths will be different probably)