Add CLI tool that converts configs from YAML to postcard

[ingobecker]

When compiled for bare metal, YAML is no longer a feasible option to save or restore a config. Postcard should be used instead. However on the end user side of things YAML is the preferred way to write new configurations. A CLI tool should allow the user to convert from human friendly YAML to machine friendly postcard and the other way around.

• Rename the default main.rs binary crate from reset_ctrl to main-linux to avoid confusion with the CLI tool
• Add a new binary crate named reset-ctrl
• Add a positional parameter for the filename
• If the filenames extension is .yml conver to .bin or the other way around