Detox CLI shell autocompletion

[d4vidi]

Improve usability of Detox' CLI by offering an autocompletion script.
One good example is the autocompletion of configs names.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs.
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[noomorph]

Might go to our "Random Detox features" scope.

[github-actions]

Hello! We appreciate you bringing this issue to our attention.
It looks like this could be a valuable addition or fix to our project.
We believe that this feature would benefit greatly from contributions from the community,
even from first-time contributors.

If you're interested in contributing to this feature,
please take a look at our contribution guide.
It has all the information you need to know about how to submit a pull request and contribute to our project.

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