Add resources for React (#3264)

* [Build] React Roadmap

Additional Suggestions for 103 Refs
1. Web Dev Simplied - a youtube video that explains the use of refs and what it can do for us
2. A content blog from 'Dmitri Pavlutin' website

* [Build] 104-React Events

I've added an additional description text in the main markdown file to help other learners/readers
keep in mind how important it is to make sure that we write code that is easy to understand. Do take
a look.

* Update src/roadmaps/react/content/103-rendering/104-events.md

Co-authored-by: Kamran Ahmed <kamranahmed.se@gmail.com>

src/roadmaps/react/content/103-rendering/103-refs.md

@@ -8,3 +8,5 @@ Visit the following resources to learn more:
 
 - [Refs and DOM](https://reactjs.org/docs/refs-and-the-dom.html)
 - [Examples of using refs in React](https://www.robinwieruch.de/react-ref/)
+- [The Complete Guide to useRef() and Refs in React](https://dmitripavlutin.com/react-useref-guide/)
+- [Learn useRef in 11 Minutes - Web Dev Simplified](https://www.youtube.com/watch?v=t2ypzz6gJm0)