test(e2e): add modal-navigation app (#5393)

* chore(apps): add modal-navigation-app for ui testing

* test(e2e): add modal-navigation app

* test(apps): remove modal-navigation-app

The app has been moved to `e2e/modal-navigation`.

* chore: include e2e folder to npm scripts

* docs: include e2e folder to DevelopmentWorkflow.md

* chore(e2e): update .gitignore

* fix(e2e): relative paths

* chore(e2e): update package.json

* test(e2e): add change root view to modal-navigation

* test(e2e): set androidTabsPosition to botton

* chore(e2e): add VSCode launch.json config

* docs(e2e): delete LICENSE and README.md files

* refactor(e2e): rename modal-tab-page to modal-tab-root

* test(e2e): update iOS launch screen

DevelopmentWorkflow.md

@@ -6,6 +6,7 @@ Development Workflow
 The repository contains several packages and apps:
  - `tns-core-modules` - The core NativeScript TypeScript modules used to develop NativeScript apps.
  - `apps` - UI app used for manual testing and automation.
+ - `e2e` - applications and *e2e* tests.
  - `tests` - Unit tests app for the `tns-core-modules`.
  - `tns-platform-declarations` - TypeScript definitions for Android and iOS native APIs.
 
@@ -18,6 +19,9 @@ Managing dependencies:
  - `apps` depends on:
     - `tns-platform-declarations`
     - `tns-core-modules`
+ - `e2e` depends on:
+    - `tns-platform-declarations`
+    - `tns-core-modules`
  - `tests` depends on:
     - `tns-platform-declarations`
     - `tns-core-modules`
@@ -26,22 +30,27 @@ Managing dependencies:
 this dependency contains native code and is rarely modified so for now it remains outside this repo.
 
 ## Initial Setup
+
 Clone (or fork/clone) the repo:
+
 ```bash
 git clone https://github.com/NativeScript/NativeScript.git
 ```
 
 Install devDependencies:
+
 ```bash
 npm install
 ```
 
-Run setup script. This will [`npm link`](https://docs.npmjs.com/cli/link) the `tns-core-modules` and `tns-core-modules-declarations` dependencies inside the `tests` and `apps` projects.
+Run `setup` script. This will [`npm link`](https://docs.npmjs.com/cli/link) the `tns-core-modules` and `tns-core-modules-declarations` dependencies inside the `tests`, `apps` and `e2e` projects.
+
 ```bash
 npm run setup
 ```
 
 ## TypeScript
+
 The following commands are commonly used to compile the `tns-core-modules`:
 ```bash
 # Full tsc with type checking ~22.2s.
@@ -55,18 +64,22 @@ tsc --skipLibCheck -w
 ```
 
 The modules have `typescript` as a devDependency so you should also be able to use the locally installed TypeScript compiler from node_modules:
+
 ```bash
 ./node_modules/.bin/tsc
 ```
 
-You can compile the TypeScript files in the `tns-core-modules`, `tns-platform-declarations`, `apps` and `tests` at once at the root of the repo:
+You can compile the TypeScript files in the `tns-core-modules`, `tns-platform-declarations`, `apps`, `e2e` and `tests` at once at the root of the repo:
+
 ```bash
 npm run tsc
 ```
 
 ## Running Unit Tests
+
 The test app is an ordinary NativeScript app that logs the test results as it go.
 After the [initial setup](#initial-setup) you can run the tests with:
+
 ```bash
 # Make sure TypeScript is transpiled
 tsc
@@ -91,6 +104,7 @@ tns run android --path apps
 ```
 
 ## Running Another App
+
 The [initial setup](#initial-setup) will `npm-link` the `tns-core-modules` globally. You can use it in any local project:
 
 ```bash
@@ -101,25 +115,33 @@ npm link tns-core-modules
 tns run ios
 tns run android
 ```
->Note: You still have to rebuild the TypeScript if you have made changes in the code of the core-modules.
+
+> Note: You still have to rebuild the TypeScript if you have made changes in the code of the core-modules.
 
 
 ## Platform declarations
 To update the platform declarations (the ios.d.ts-es) you can run:
+
 ```
 npm install
 npm run dev-declarations
 ```
+
 This script will update the iOS declarations. Android tools are not integrated yet.
 The declarations are generated from the test app and will include the native code from tns-core-modules-widgets.
 
 # Documentation API reference
+
 The following will build the API reference pages in `bin/dist/apiref`:
+
 ```
 npm run typedoc
 ```
+
 If you want to improve on the documentation you can also build and start up dev web server:
+
 ```
 npm run dev-typedoc
 ```
+
 The terminal will point the address you can open in your web browsed.