ng serve builds the application and starts a web server
--port (-p) port to serve the application on
--host (-H)
--proxy-config (-pc)
--watcher (-w) provide a new watcher
--live-reload (-lr) flag to turn off live reloading
--live-reload-host (-lrh) specify the host for live reloading
--live-reload-base-url (-lrbu) specify the base URL for live reloading
--live-reload-port (-lrp) port for live reloading
--live-reload-live-css flag to live reload CSS
--target (-t, -dev, -prod) target environment
--environment (-e) build environment
--ssl flag to turn on SSL
--ssl-key path to the SSL key
--ssl-cert path to the SSL cert
--aot flag to turn on Ahead of Time compilation
--open (-o) opens the app in the default browser
--extract-css extract css from global styles onto css files instead of js ones