Single-spa app with React and Angular

Install the npm packages

Navigate to the root-config, react-app, and angular-app folders and run the command

$ npm install

Navigate to the angular-app folder and run the below command
```
$ npm run serve:single-spa:angular-app
```
Navigate to the react-app folder and run the below command
```
$ npm start
```
Navigate to the root-config folder and run the below command
```
$ npm start
```
In the browser open the application at http://localhost:9000

Now in the top navigation bar click on React, you will be routed to the React app, on click of Angular you will be redirected to angular app

http://localhost:9000/react -> React App http://localhost:9000/angular/ -> Angular App