Texts can be styled in iOS

[KarlosQ]

Overview

I recover style props from v7 to v8 (titleStyle, cancelTextStyle, confirmTextStyle).

Test Plan

Use titleStyle, cancelTextStyle, confirmTextStyle props in this component.

[mmazzarolo]

Hey @KarlosQ , thanks for submitting a PR.

May I ask you what kind of customization you need to apply to the styles?
The main aim of this component (on the iOS side) is to look "native", so if you're adding style on it to make it look more "native" feel free to start a discussion on adding it directly in the component itself 👍

Otherwise...
In order to increase the maintainability of the component, I'd prefer to provide your own pre-styled Header/ConfirmButton/CancelButton to the customHeaderIOS/customConfirmButtonIOS/customCancelButtonIOS instead.

[KarlosQ]

Also we could customise text but using customHeaderIOS / customConfirmButtonIOS / customCancelButtonIOS. Example:
customHeaderIOS={props => <DateTimePicker.Header textStyle={newStyle} {...props} />}