ANGULAR

 * NPM stand for node package manager

* npm install -g @angular/cli    is used to install angular cli in  your computer sytem

* ng new my-app   - to create new project name my-app

* CORS , We need to configure the cors because django drf run on different port and angular run on different port , so to tell django ist's ok that they both run on different port we need to configure the CORS

* angular use httpClient to make a HTTP call to send request to the backedn

* Service is used for API call in angular and component is useful for UI

* ng g c components/passengerDetails   -------> This is used for creating the component

* ng g s services/login -  for creating the service

* 

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