Google Code-in

Currently, webpack dev server is configured to start at port 8080 and nodemon server starts at port 3030. Make changes to the webpack and nodemon configuration to accept a port number as a CLI parameter and start the server at that port. If the CLI parameter is not provided it should use the first available port starting from 8080 and 3030 respectively. Create a pull request for the same and submit the link to the pull request.