Creating a visual coding extension for kids similar to scratch, feasability?

[HRussellZFAC023]

The extension would consist of a toolwindow, with certain constructs which can be dragged into the editor window (such as "if" or "for"), in addition, I would like to create some visualization for multiple threads / processes, perhaps allowing code blocks to be dragged/pinned to specific cpu cores.

I am new to c# so any thoughts about what is possible would be very useful, and what tools libraries and templates I could use.

Thanks so much 🙏