support icons in menu items

[arasrezaei]

Hello there,
thanks for this great library,
it would be really good to be able to add icons to menu items.
also please add an option to not override default menu items, just add items to it.
thanks.

[AlenToma]

I am not the author of the library, and sadly I am not that good with native code to implement this.

[AlenToma]

I have build another library may be as a replacement. You can use icons

https://github.com/AlenToma/react-native-text-contextmenu