[TIMOB-28559] Android: Modify Ti.UI.Button "image" to support "R.drawable" IDs

*Summary:* The Ti.UI.Button "image" property currently only supports String paths and Ti.Blob objects. On Android, we should add support for native resource IDs to load drawables, such as vector drawables. These are more commonly used and Android Studio has a wizard dialog to easy generate standard material icons that most apps use. *To-Do:* Modify "image" property to also support Number type to be a resource ID from Ti.App.Android.R.drawable.*. We should change our Java drawable loading code to call the static TiDrawableReference.fromObject() instead, which already supports Number type as well as File type. https://github.com/appcelerator/titanium_mobile/blob/master/android/modules/ui/src/java/ti/modules/titanium/ui/widget/TiUIButton.java#L145-L150 https://github.com/appcelerator/titanium_mobile/blob/master/android/titanium/src/java/org/appcelerator/titanium/view/TiDrawableReference.java#L303-L326 *Example:*

const window = Ti.UI.createWindow();
const imageButton = Ti.UI.createButton({
	title: "Delete",
	image: Ti.App.Android.R.drawable.titanium_icon_delete,
});
imageButton.addEventListener("click", () => {
	alert("Button clicked on.");
});
window.add(imageButton);
window.open();

!Button-Light.png|thumbnail! !Button-Dark.png|thumbnail!