This commit adds support for icons in TopTabs.
It’s possible to have icons with text, or only icons.
Use topTabIconColor and selectedTopTabIconColor to color the icons

* Don’t create SideMenu button automatically on Android

* Remove left button and add it dynamically

* Fix resetTo animation on Android

Up until now resetTo would destroy the current stack and create a new
one. This was an easy implementation but resulted in jurky
(none existent) animations.
This commit changes resetTo behavior. Instead of recreating the stack,
the we reset to is pushed to the stack, and the other elements are
removed when show animation ends.

* Fix bug in popToRoot when keyboard is visible

* Add comments

* code review changes

* Add final to function parameters

* WIP

* Core function works e2e

* Queued overlays support

* Remove unneeded activity ref

* Add post-PR changes

This reverts commit c2ef2608c1.

As discussed on #644

This reverts commit 72fbe247bd.

This commit also introduces a tempprary fix to an issue where fab is
displayed on wrong screen when switching between bottom tabs rapidly.

* Dispatch a navigation event whenever the side menu button is clicked (BottomTabsLayout)

* Dispatch a navigation event whenever the side menu button is clicked (SingleScreenLayout)

* Changed the way the navigatorEventId is retrieved in SingleScreenLayout.

* added tab selected event

* changed event name to `bottomTabSelected`

* Fix navigator buttons immutability issue

* Show fab in pushed screen

* added status bar color scheme for single screen which isn't pass on push. Set "statusBarTextColorSchemeSingleScreen" on the navigatorStyle

* make statusBarTextColorSchemeSingleScreen preferred option when both statusBarTextColorScheme and statusBarTextColorSchemeSingleScreen are exists

* Pass showAsAction property to native. It was left out by mistake
* Support textual icons in contextual menu

The event is sent to the top most screen displayed in the current screenStack.

call setButtons with empty fab object to remove it

* Added default testId to registered components

* Added default testID to registered components

* Corrected screenId to screenID

* Added default testId to registered components

* Added default testID to registered components

* Less intrusive collapsing implementation

In order for a screen to implement collapsingTopBar, it had to define
a specific set of style properties such as drawUnderTabBar or
drawUnderNavBar. This commit aims to make implementing collapsingTopBar
less intrusive by inferring these properties from hideTitleBarOnScroll.

This commit introduces a few fixes and changes related to
the collapsingTopBar mechanism.

1. Screens are now drawn under bottomTabs if titleBarHideOnScroll
   is true.

2. TitleBarHideOnScroll can be passed in AppStyle.

3. ScrollView is detected properly after it gets detached due to large
   diff in render.

4. Take BottomTabs height into account when measuring collapsing
   screens.