[BREAKING] Buttons refactor

* Support setting single button
```js
  topBar: {
    rightButtons: {
    }
  }
```
* [BREAKING] Rename button.title to button.text

* Set TopBar default background color (white)

* Refactored backButton api

* Move StackController to separate package

Implement BackButtonOptions

* Somewhat simplify StackController creation in tests

* Pull backButton logic from StackController

* Handle all TopBar button options in TopBarButtons

* fix back button on iOS

This commit also changes the way TopBar background color is applied.
Instead of applying it to the TitleBar, it's applied to the entire TopBar layout

This commit also changes the way TopTabs options are handled. As the TabLayout
is part of the TopBar, it's the StackControllers responsibility to set TopTabs options.

This commit add support for changing the TopBar height as well as changing
the height of custom component used as background

* pass props for topBar background component

* refactored custom components

* pass props for topBar background component

* refactored custom components

* refactored RNNOptions object

* Use margin to control component position relative to TopBar

RelativeLayout rules caused excessive CPU usage due to issues with RN's
keyboard detection mechanism (based on global layout listener)

* Skip custom transition e2e on Android

* Improved the clarity of the top-level API doc (#2984)

I clarified some of the language here so that it is easier for the beginner to understand. (It was a little bit awkward before)

* Increase gradle daemon process memory

* Disable Orientation test on Android

* Fix SideMenu e2e

* Fix popTo

* Use margin instead of RelativeLayout rules to align component to BottomTabs

Rules caused excessive CPU usage due to RN issue with global layout listener
and keyboard visibility detection.

* Update README.md

for triggering build

* Update README.md

* Consolidate pop and animatePop

* Update top-level-api.md ... more copyediting. (#3002)

Further clarification of some of the top level API stuff.

* popTo animates top screen

* Refactor component options on Android

* Stop processing passProps from options

* removed comments

* WIP

* Apply default options when screen options are null

* modal animations

* fix tests

* refactor

* refactor

* refactor

* refactor

* test fix

* topBar anim

* child disappear bug

* Update app.js

* Update WelcomeScreen.js

* fix tests

* bottom tabs

* stack id

* fix test

* refactoring

* merge fix

* Update app.js

* merge

* comment to fix test

Manage the view with controller which handles lifecycle

motivation: ability to add react view as TopBar background

Previously, all options were cleared and reapplied whenever mergeOptions was called

* WIP

* Apply default options when screen options are null

* modal animations

* fix tests

* refactor

* refactor

* refactor

* refactor

* test fix

* topBar anim

* child disappear bug

* Update app.js

* Update WelcomeScreen.js

* fix tests

* Refactor TopBar options, introduce title options

* Update background to new api

* Refactored topBar options on iOS

* Initial react component in TitleBar android

* set height to react view in TitleBar

* fix tests and lint

* ios unit tests fix

* TopBar custom buttons initial commit

* f

* Consolidate TopBarButtonController and TopBarButton

* Move Toolbar related stuff to TitleBar

* TitleBarTest

* More tests

* options

* proof of concept

* pop

* test fix

* default options

* scale

* rotation

* null check

* refactor

* refactor

* refactoring

* fix tests

* Rename TopBar.animateHide to animate

also fix some options in playground app

* Consolidate topBar visibility in childWillDisappear

* Rename BottomTabs.animateHide to animate

* Hide topBar with animation by default

* fix unit tests

* Initial implementation of willAppear and willDisappear

Currently only implemented on pop in StackController

* call clearOptions on super
* TopTabs visible

* fix unit

* Fix Options.copy
* Screens are now by default drawBehind: false

* detox android support

* detox android support

* android detox fixes

* android fixes

* more android e2e fixes

* typo fix

* build fix

* remove specific test for ios

* Update DetoxTest.java

* lint fix

* fixed typo

* Update ViewController.java

* added script for android detox e2e

* detox android support

* android detox fixes

* android fixes

* more android e2e fixes

* typo fix

* build fix

* remove specific test for ios

* Update DetoxTest.java

* lint fix

* fixed typo

* Update ViewController.java

* added script for android detox e2e

* e2e test fixes

* Update Orientations.test.js

* Update ScreenStack.test.js

* Update ScreenStyle.test.js

* Update TopLevelApi.test.js

Continued work on Android

* Rename TopTabsLayout to TopTabsViewPager
* Pass ScrollEventListener from component
* Change ViewController.view to protected
* Don't keep ref to view in ComponentController
* Pull IReactView and ReactViewCreator to separate classes
* Ensure ToolBar.menu is created before clearing menu items
* Unmount react view before destroy
* Let TopTabsController set mediator in view visibility handling

* Change topBar backgroundColor to Color object

* StackLayout implementation

Unfortunately, this commit also contains a lot of refactoring and a few
bug fixes relating to styles.

* TopBar is not part of Component, instead it's a part of StackLayout
  and shared between all components pushed to the stack Similar to iOS.
* Handle ScrollEvent in ReactView instead of passing the listener down
* Implement Fraction and Text null objects for style params
* Converted a few style params to null objects. This fixes some styles
  being applied even when they were not specified explicitly.
* Stop sending null promise to commands
* Seperate push and pop into animatePush/push and animatePop/pop
  to avoid boolean param

* Adapt TopTabs to new API

Application class can now be accessed statically using Context to access AppModule
which provides dependencies needed throughout the app.

* Deleted getContentView method
* Delete Custom dialog code
* Delete topTab code
* sendOnNavigationButtonPressed was pulled to a dedicated interface

* readme

* doc

* topbar fix

* rm doc

* options presenter fix

* rm userless stuff

* WIP

* WIP

* WIP

* translation

* WIP

* todo

* draw under

* fix merge

* merge fix

* more merge fix

* improve calc

* animation improvement

* fix tests

* refactor

* refctor

* tests

* fix test

* anim improve

* rm outdated

* refactoring

* more refactoring

* tests

* refactor

* hotfix

* more refactoring

* refactor

* some more refactoring

* refactor

* Collapse topbar

* Currently doesn't work - need to implement custom TopTab view

* Implement selected and unselected toTab color

* Test options are applied when layout is visible

* Implement titleFontFamily in topTab option

* docs

* Pass TypefaceLoader instead of context