doc: add "Comparison to other Projects in the Ecosystem"

This is especially interesting as the `std` implementation of Rust is upcoming

Author: phip1611

uefi/src/lib.rs

@@ -117,6 +117,24 @@
 //! Contributions in form of a PR are also highly welcome. Check our
 //! [contributing guide][contributing] for details.
 //!
+//! # Comparison to other Projects in the Ecosystem
+//!
+//! ## Rust `std` implementation
+//!
+//! There is an ongoing effort for a `std` [implementation of the Rust standard
+//! library](https://doc.rust-lang.org/nightly/rustc/platform-support/unknown-uefi.html),
+//! that is yet far from being mature. As of Mid-2024, we recommend to use our
+//! `uefi` library in a `no_std` binary to create EFI images.
+//!
+//! We will closely monitor the situation and update the documentation
+//! accordingly, once the `std` implementation is more mature.
+//!
+//! ## `r-efi`
+//!
+//! Raw UEFI bindings without high-level convenience similar to our `uefi-raw`
+//! crate, which is part of this  project, but more feature-complete. It
+//! targets a lower-level than our `uefi` crate does.
+//! 
 //! # MSRV
 //! <!-- Keep in Sync with README! -->
 //!