Merge branch 'rahix/radical-readme-rework' into 'main'

README: Add logo

See merge request flow3r/flow3-rs!1

README.md

-# Flow3-rs
-### Rust board support / runtime for the Badge
+<img align="right" src="img/logo.png" width="220" />
+
+# flow3-rs
+### Rust board-support / runtime for the flow3r badge
 
 This repo provides a pure-rust board support crate / runtime + drivers for the hardware on the badge