docs(angular): add two-way binding content (#6445)

src/data/roadmaps/angular/content/two-way-binding@2UH79nCjgtY1Qz1YjUJYL.md

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-# Two-way Binding
+# Two-way Binding
+
+Two-way binding gives components in your application a way to share data. Use two-way binding to listen for events and update values simultaneously between parent and child components. Angular's two-way binding syntax is a combination of square brackets and parentheses, `[()]`, commonly known as `banana in a box`.
+
+Visit the following resources to learn more:
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+- [@official@Angular Official Docs - Two-way binding](https://angular.dev/guide/templates/two-way-binding)
+- [@article@How to implement two-way data binding in Angular](https://www.angularminds.com/blog/how-to-implement-two-way-data-binding-in-angular)