fix: improve robustness of add-on args parsing

[jycouet]

Closes #678

Extra

• docs: add quotes to avoid error executing command with add-on options #679 should probably be discarded ?
• feat: specify add-on options in command args #543 initial work on this

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Latest commit: 59ef165

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commit: 59ef165

[AdrianGonz97]

This is excellent, thank you!

Just made a few tweaks and moved the parser implementation to the cli directory rather than core since it's fairly specific CLI logic.

[jycouet]

Thx for looking at it @AdrianGonz97
I was thinking that it could be usefull for community add-on later on, that's why I've done it in core. (also test setup was already prepared there)

But we can always move it later.

I let you decide 👍