docs(angular): add attribute-binding content (#6467)

src/data/roadmaps/angular/content/attribute-binding@FgsSyM6To7irpbivtOLEE.md

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 # Attribute Binding
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+Attribute binding in Angular helps you set values for attributes directly. With attribute binding, you can improve accessibility, style your application dynamically, and manage multiple CSS classes or styles simultaneously.
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+Visit the following resources to learn more:
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+- [@official@Angular Official Docs - Attribute Binding](https://angular.dev/guide/templates/attribute-binding)
+- [@article@What is difference between binding to attribute and binding to property in Angular?](https://stackoverflow.com/questions/76967327/what-is-difference-between-binding-to-attribute-and-binding-to-property-in-angul)