Icon typing doesn't match react-native-paper's underlying type

[MikkoSteerpath]

Is your feature request related to a problem? Please describe.
In for example HeaderPickProps, the closeIcon type is string, however this gets eventually passed to Appbar.Action's icon property which has the type IconSource.

Describe the solution you'd like
I wish the icon properties in react-native-paper-dates would also be typed as IconSource rather than string, to match react-native-paper's type.

Describe alternatives you've considered
Currently I'm just casting my IconSource generator method to a string, knowing it all works out.

[iM-GeeKy]

PRs are welcome!

[github-actions]

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[github-actions]

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