This commit adds support for fade and slide-horizontal animations for modals and a few other animation related changes:

* Support defining animationType when calling dismissModal
* Support fade and slide horizontal animations for modals
* Slightly reworked current screen animations timings
* Fixed slide-horizontal x offset and removed alpha

* android oreo overdraw fix

* apply top bar title color

* update readme

* update formatting

* merge v2

* navigation oprtions formatting

* font size props

* update test

* ci fix

* rm global variable

* font size

* update readme

* playground

* after merge fix

This is a breaking change and has to be opt-in. To prevent host.clear from being called,
Override `clearHostOnActivityDestroy` in MainApplication and return false:

```java
    @Override
    public boolean clearHostOnActivityDestroy() {
        return false;
    }
```

If host isn't cleared, the next time the app is opened react context might still be initialized.
In this case we emit appLaunched event which has to be handled in Js:

```js
  Promise.resolve(Navigation.isAppLaunched())
      .then((appLaunched) => {
        if (appLaunched) {
          startApp();
        }
        new NativeEventsReceiver().appLaunched(() => {
          startApp();
        });
      })
```

* android oreo overdraw fix

* apply top bar title color

* update readme

* update formatting

* merge v2

* navigation oprtions formatting

* update test

* ci fix

* rm global variable

* remove obsolete method

This converts from using a deprecated attribute.

* add disabledButtonColor in order to set navigation button disabled color

* add disabledButtonColor to the docs

* Added v2 docs

* Move docs around

* Update _sidebar.md

* Update README.md

* Delete

* Remove usage docs (it was duplicated)

* Fixed sidebar links

* Moved the readme back to the root

* Added v2 docs

* Move docs around

* Update _sidebar.md

* Update README.md

* Delete

* Remove usage docs (it was duplicated)

* Fixed sidebar links

* Added v2 docs

* Move docs around

* Update _sidebar.md

* Update README.md

* Delete

* Remove usage docs (it was duplicated)

This reverts commit 082a65d791.

Fixes #1007

* added orientation options

* removed orientation e2e in modal screen

* statusBarBlur for ios

* unit tests for ios statusBarBlur

* Update README.md

* Add font family support on bottom tabs

* import missing classes

* import missing class

* update document

* Support customize icon for left nav button in android

* Add navBar navBarTextFontSize support for android

* Add missing parameter instruction for in app notification

* Merge changes as origin master

Ability to set a flat border under the TopBar. `topBarElevationShadowEnabled` should be set to true if using this feature.