Add Formisch to React forms node (#10196)

roadmaps/react/content/forms@KHcC5pFN3qLnsbPPKpYd2.md

@@ -5,4 +5,5 @@ Although you can build forms using vanilla React, it normally requires a lot of
 Visit the following resources to learn more:
 
 - [@article@How to use Forms in React](https://www.robinwieruch.de/react-form/)
+- [@opensource@open-circle/formisch](https://github.com/open-circle/formisch)
 - [@video@React Forms: the SIMPLEST way](https://www.youtube.com/watch?v=CT-72lTXdPg)