terminal borked after ^C during prompt

[symphorien]

Steps to reproduce:

1. run the tool
2. during a prompt ^C
3. terminal cursor disappears
   expected behavior:
4. terminal cursor is restored

[Ekleog]

Given console-rs/dialoguer#77 ; this would probably be hard to solve upstream (we do want to hide the cursor during the selection).

Good news is the workaround is also described there :)

[Ekleog]

Actually, thinking about it, a ctrl-c handler would also be a great place to make sure we're removing the temporary directories upon ctrl-c