WORK FLOW OF ANGULAR
-> main.ts -> bootstrap Appmodule ->
->bootstraps -> app.module.ts->@Ngmodule->Declaration->bootstraps Appcomponents
-> apps.component.ts -> styles and HTML pages and acts on the SELECTOR ie 'app-root'
-> app root is present in INDEX.html
so starts at -> main.ts app.module.ts apps.components.ts index.html