Add riverpod desc (#3599)

* Add riverpod desc

* Update src/data/roadmaps/flutter/content/111-state-management/102-riverpod.md

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

src/data/roadmaps/flutter/content/111-state-management/102-riverpod.md

@@ -1 +1,12 @@
 # Riverpod
+
+Riverpod was created by the same author as Provider, and is designed to make it easier to manage application state by providing a more intuitive API and better performance than Provider.
+
+One of the key features of Riverpod is its ability to manage and scope state in a more granular way than Provider. This can make it easier to reason about your application's state and can lead to more efficient re-renders.
+
+Learn more from the following links:
+
+- [riverpod](https://pub.dev/packages/riverpod)
+- [Riverpod in Flutter](https://docs.flutter.dev/development/data-and-backend/state-mgmt/options#riverpod)
+- [Documentation](https://riverpod.dev/)
+- [Documentation v2 is in progress](https://docs-v2.riverpod.dev/)