Merge #408

408: Add nucleo-h723zg board support crate r=eldruin a=jlogan03

Just what it says on the tin

Co-authored-by: James Logan <[email protected]>

Author: bors[bot]

README.md

@@ -667,6 +667,7 @@ Crates tailored for specific boards.
 - [`nucleo-f103rb`](https://github.com/therealprof/nucleo-f103rb.git) - [Nucleo-F103RB]
 - [`nucleo-f401re`](https://github.com/jkristell/nucleo-f401re.git) - [Nucleo-F401RE] ![crates.io](https://img.shields.io/crates/v/nucleo-f401re.svg)
 - [`nucleo-h743zi`](https://github.com/astraw/nucleo-h743zi) Beginner-oriented support crate for the Nucleo H743ZI and Nucleo H743ZI2
+- [`nucleo-h723zg`](https://github.com/jlogan03/nucleo-h723zg) Board support crate for the Nucleo H723ZG
 - [`solo-bsp`](https://crates.io/crates/solo-bsp) Board Support Crate for [Solo], an open source security token (WIP) - ![crates.io](https://img.shields.io/crates/v/solo-bsp.svg)
 - [`stm32f407g-disc`](https://crates.io/crates/stm32f407g-disc) Board Support Crate for the [STM32F4DISCOVERY] (WIP) - ![crates.io](https://img.shields.io/crates/v/stm32f407g-disc.svg)
 - [`stm32f429i-disc`](https://crates.io/crates/stm32f429i-disc) Board Support Crate for the [STM32F429DISCOVERY] (WIP) - ![crates.io](https://img.shields.io/crates/v/stm32f429i-disc.svg)