docs(angular): add dependencies content (#6714)

src/data/roadmaps/angular/content/dependencies@5b590c7s-2XJ0rgdCYxLa.md

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 # Dependencies
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+A provider is an instruction to the Dependency Injection system on how to obtain a value for a dependency. Most of the time, these dependencies are services that you create and provide.
+
+Visit the following resources to learn more:
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+- [@official@Angular Official Docs - Providing dependencies in modules](https://angular.dev/guide/ngmodules/providers)
+- [@article@Providers in Angular](https://www.scaler.com/topics/angular/providers-in-angular/)
+- [@article@Working with providers in Angular](https://sergeygultyayev.medium.com/working-with-providers-in-angular-eeb493151446)