refactor: Improve CAN Demo projects (#167)

* refactor: Improve CAN Demo project names

Rename Foo to Send and Bar to Receive to be clearer about their purposes. Update CAN bus name from `veh` to `demobus` to emphasize this demo. Improves READMEs

* fixes filenames

* initial periphs

* Linux MCAL

* Demo CAN Work, Blink for linux

* adds button to Demo CAN Send cli

* renames postbuild to fix casing

* Fix hardcoded ID in mcal/linux. Improve README to add instructions. Add IO for stm32 & CLI platforms.

* Simplify message to use just one field. Fix button type in Send

* Print CAN bytes only up to frame DLC

* updates Receive pinout & adds docs for stm platform

* Add link to WSL article

* Remove Linux Toolchain cmds since they did not fix their listed problem

* Use std::format instead of stream operator.

* Simplify CMakeLists

* Update to new config scheme

* Update to new config scheme

refactor: Improve CAN Demo projects (#167)

* refactor: Improve CAN Demo project names

Rename Foo to Send and Bar to Receive to be clearer about their purposes. Update CAN bus name from `veh` to `demobus` to emphasize this demo. Improves READMEs

* fixes filenames

* initial periphs

* Linux MCAL

* Demo CAN Work, Blink for linux

* adds button to Demo CAN Send cli

* renames postbuild to fix casing

* Fix hardcoded ID in mcal/linux. Improve README to add instructions. Add IO for stm32 & CLI platforms.

* Simplify message to use just one field. Fix button type in Send

* Print CAN bytes only up to frame DLC

* updates Receive pinout & adds docs for stm platform

* Add link to WSL article

* Remove Linux Toolchain cmds since they did not fix their listed problem

* Use std::format instead of stream operator.

* Simplify CMakeLists

* Update to new config scheme

* Update to new config scheme