CANOpen for Rust

Move test to demo repo

Integration test cases are move to canopen-demo repository, because we need to share some testing utils for tests/ and examples/ folder together. This is helpful for end-to-end tests with RP2040 & x86 together. If you've better ideas, please let us know. (zephyr@atomi.ai)

How to build

To build the crate in "x86_64-unknown-linux-gnu" and "thumbv6m-none-eabi".

cargo build --target=x86_64-unknown-linux-gnu
cargo build --target=thumbv6m-none-eabi 

And you can test the project:

cargo test

We still have some unit tests here.