Add [prinThor] firmware

Author: cbruiz

README.md

@@ -1318,6 +1318,8 @@ Work in progress crates. Help the authors make these crates awesome!
 - [Card/IO ECG](https://github.com/card-io-ecg/card-io-fw): Firmware for a business-card-sized ECG device with Wifi connectivity
 - [BillMock](https://github.com/pmnxis/billmock-app-rs): Firmware for credit card terminal add-on hardware to install on Korean arcade machines
 - [LuLuu](https://github.com/fu5ha/luluu): Firmware for a custom RP2040-based display controller that streams animated images from a microSD card to a small LCD display. 
+- [prinThor](https://github.com/cbruiz/printhor): 3DPrinter/CNC/Engraver firmware framework powered by rust embassy for stm32 families and rp2040.
+
 
 ## Old books, blogs, and training materials