Make it possible to treat non options as unknown arguments

[Falcosc]

No description provided.

[cofyc-bot]

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[Falcosc]

/assign @cofyc

[cofyc]

can you describe your use case?

[Falcosc]

Projects without non option arguments do need this:

APP.exe -a 123 -b 345 invalidStuff

Or just app.exe invalid stuff

These 2 examples do currently not print help

And it needs to be a flag because projects which are using non option arguments, like a file path or an action name would like to support non option arguments. I thought the default value should be support of non option arguments, so the flag need to be manually set if you want to treat non option arguments as invalid input.

[cofyc-bot]

@Falcosc: PR needs rebase.

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