Add rmk firmware

Author: HaoboGu

README.md

@@ -1285,6 +1285,7 @@ Work in progress crates. Help the authors make these crates awesome!
 
 ## Firmware projects
 
+- [rmk](https://github.com/HaoboGu/rmk): Mechanical keyboard firmware for stm32/rp2040, with dynamic keymap/vial/eeprom support, written in Rust
 - [anne-key](https://github.com/ah-/anne-key): Alternate keyboard firmware for the Obins ANNE Pro
 - [μLA](https://github.com/dotcypress/ula): Micro Logic Analyzer for RP2040
 - [air-gradient-pro-rs](https://github.com/jonlamb-gh/air-gradient-pro-rs): Bootloader, firmware and CLI tools for the AirGradient PRO