yazi: add extraPackages option for wrapper PATH extension

[khaneliman]

Description

Just wondering if we think this would help users or if we should just add a note about how to configure it themselves with the package option?

Checklist

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[eljamm]

I personally like the extraPackages option and use it with other modules. While it's not difficult to override the package, IMO it's more convenient for users to have this option, especially beginners.

[eljamm]

Diff LGTM, thanks!