Tab completing for the cd command

[pmikolajczyk41]

or if this is too hard, as a workaround, allow passing a starting directory like ./target/release/drink-cli exmaples/flipper

cc: @JoshOrndorff

[pmikolajczyk41]

I've spent some time trying to get this working, but actually, I don't see any easy, good working solution. clap_complete is able to generate a short shell script, but it's still pretty troublesome to run it (it's not a single command). Also, displaying available completions is a question mark :|

While I agree that it would be a nice feature, for now we will have to park it.

[piotrMocz]

@JoshOrndorff we merged the change allowing to pass a starting directory, you can give that a spin! ;)