Add interactive menu to set ohcrab automatically

[luizvbo]

Is your feature request related to a problem? Please describe.
As it is, there's a lot of manual work involved in setting ohcrab. You need to run eval $(ohcrab --shell SHELL_TYPE) or add it to your bashrc/zshrc. Also, the alias option is only mentioned in the README, which is not that transparent to the user.

Describe the solution you'd like
Add an interactive menu (e.g., python copier package) asking for the shell type, alias and wether to write the eval command to bashrc/zshrc.

Additional context
Interactive menu from copier: