[App] Automate missing requirements installation for CLI

[tchaton]

What does this PR do?

This PR adds support for installing ClientCommand requirements when missing.

This is done during the connect phase. If the user provides --yes, it is automatically installed.

Does your PR introduce any breaking changes? If yes, please list them.

Before submitting

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• Did you write any new necessary tests? (not for typos and docs)
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• Did you list all the breaking changes introduced by this pull request?
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PR review

Anyone in the community is welcome to review the PR.
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Did you have fun?

Make sure you had fun coding 🙃

cc @Borda

[ethanwharris]

Small suggestion 😃