Use deno-shell for a cross platform shell

[sigmaSd]

This have the advantage of having a cross platform shell out of the box , instead of using ffi you can actually use wasm see https://github.com/dsherret/ax which does exactly this.

[c4spar]

Yeah, that would definitely be nice and i already had this in mind. I mentioned this idea a few months ago in denoland/deno#14068 (comment) and also started testing some simple bindings for deno_task_shell in https://github.com/c4spar/deno-shell.