docs(angular): add event-binding content (#6444)

src/data/roadmaps/angular/content/event-binding@bKnpirSvex4oE4lAjiSSV.md

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 # Event Binding
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+Event binding lets you listen for and respond to user actions such as keystrokes, mouse movements, clicks, and touches.
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+Visit the following resources to learn more:
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+- [@official@Angular Official Docs - Event Binding](https://angular.dev/guide/templates/event-binding)
+- [@article@Event Binding in Angular](https://www.knowledgehut.com/blog/web-development/event-binding-in-angular)