enhance(docs): add github workflow state

README.md

@@ -1,14 +1,17 @@
 # ch58x-hal
 
+[![Github Actions][github-workflow]][homepage]
 [![Crates.io][badge-license]][crates]
 [![Crates.io][badge-version]][crates]
 [![docs.rs][badge-docsrs]][docsrs]
 
+[github-workflow]: https://img.shields.io/github/actions/workflow/status/ch32-rs/ch58x-hal/rust.yml?style=for-the-badge
 [badge-license]: https://img.shields.io/crates/l/ch58x-hal?style=for-the-badge
 [badge-version]: https://img.shields.io/crates/v/ch58x-hal?style=for-the-badge
 [badge-docsrs]: https://img.shields.io/docsrs/ch58x-hal?style=for-the-badge
 [crates]: https://crates.io/crates/ch58x-hal
 [docsrs]: https://docs.rs/ch58x-hal
+[homepage]: https://github.com/ch32-rs/ch58x-hal
 
 HAL for the CH58x RISC-V BLE microcotrollers from WCH.