cli: use shlex tokenization when parsing dot commands arguments

[pauliyobo]

Use shlex tokenization to parse dot commands arguments in all cases.
This allows using quoted strings which contain white spaces to be treated as a single argument, allowing for example paths with spaces, as reported in #7338
Fixes #7338

[github-actions]

Fossier: Manual Review Requested

@pauliyobo is a new contributor. A maintainer should review this PR before merging.

Score Breakdown

Total Score: 50.4/100 | Confidence: 100% | Outcome: REVIEW

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[LeMikaelF]

please add tests

[pauliyobo]

Hello,
@LeMikaelF sounds good.
In this case which kind of test would be more appropriate? Is it fine to add unit tests that handle the arguments parsing or were you meaning integration tests?
Thank you!