* mvp for start command
* modified the signature of the start command
* parse filenames
* working model for macos is done
* refactored to read from pipes
* start command works well on macos; manual testing reveals need of --args flag support
* implemented start error; color printing of warning and errors
* ran clippy and fixed warnings
* fix a clippy lint that was caught in pipeline
* fix dead code clippy lint for windows
* add cfg annotation to import
