docs(angular): add devtools content (#6391)

src/data/roadmaps/angular/content/devtools@T3MmS3bvMMgCUbOk3ktU7.md

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 # DevTools
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+Angular DevTools is a browser extension that provides debugging and profiling capabilities for Angular applications.  You can view component trees and change detection cycles.
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+Visit the following resources to learn more:
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+- [@official@Angular Official Docs - devtools](https://angular.dev/tools/devtools)
+- [@official@Chrome Web Store](https://chromewebstore.google.com/detail/angular-devtools/ienfalfjdbdpebioblfackkekamfmbnh)
+- [@official@Firefox Add-ons](https://addons.mozilla.org/en-US/firefox/addon/angular-devtools/)
+- [@video@Did you try the LATEST Angular developer tools?](https://www.youtube.com/watch?v=tAfe33fVW4w)