When setRoot is called, modals should be destroyed, while Overlay components can remain on screen.

* Cleanup and reorganise playground app

* Separated tests into three categories
  1. Layouts - layout specific tests and feature showcase
  2. Options - options related tests; interactions between static and dynamic options, merge options etc
  3. Navigation - general navigation features; Orientation handling, events, Overlay etc

* Fixed a few Android bugs
  1. testID wasn’t applied on TopBar react buttons
  2. static options were disregarded when creating initial BottomTab options
  3. Trying to open a none existent SideMenu would result in a crash

* Fix e2e tests

* Fix lint

* Few fixes + split push from SideMenu test into two tests

* Fixes e2e

## What this PR is about?
Finally all strict rules are enables for TypeScript compiler! 🎉 Basically previously `noImplicitAny` was turned off but now it plus all strict rules are turned ON! 💋 

## Some highlights of the changes
- `Element` renamed internally to `SharedElement` to make more sense what is it
- `LayoutTreeParser`'s responsibility is now to do all `id` related stuff. Previously it was spread between `LayoutTreeCrawler` and `LayoutTreeParse` so it is more simple now
- clean up a lot of tests because they were testing duplicate stuff that was covered by other tests already
- removed all usages of `static get options` and replaces them with `static options`. This is how it is in the docs plus you cannot have `static get options(passProps)` because it is impossible to have getter with parameters.

This commit introduces an option to control the way components are pushed into the stack.
When pushing components into a stack, they are pushed the moment they are measured.
If `waitForRender` is true, components will be pushed only after the initial render.

api:

```js
options: {
  animations: {
    push: {
      waitForRender: true
    },
    showModal: {
      waitForRender: true
    }
  }
}
```

screenBackgroundColor was also renamed to backgroundColor

```js
layout: {
  orientation: 'landscape',
  backgroundColor: 'red'
}
```

* Update docs

Outdated onAppLaunched part is changed

I just started to a project with v2 and I realized this part of the documentation was wrong. I searched a bit and find this 2 commits: 

104e3f97fd

1d2680c5aa

So, that part is probably forgotten

* Modal unmount e2e test

* Modal unmount e2e test changes.

* Support creating stack with multiple children

* Add e2e

* refactored e2e tests to work with testIDs

* lint fix

* android e2e fixed

* push/pop promise

* tests

* modal

* other

* fix tests

* probably test fix

* added orientation options

* removed orientation e2e in modal screen

* changed this.props.id to this.props.containerId

* fixed js tests

* refactor