Type-Safe Rust Wrappers for various ESP-IDF services

(WiFi, Network, Httpd, Logging, etc.)

The wrappers are implementations of the abstractions defined in the embedded-svc project.

For more information, check out: * The Rust on ESP Book * The embedded-svc project * The esp-idf-template project * The esp-idf-sys project * The esp-idf-hal project * The Rust for Xtensa toolchain * The Rust-with-STD demo project