[red-knot] Add run panel (#17002)
## Summary
This PR adds a new secondary panel to the red knot playground that
allows running the python code (current file) with
[pyodide](https://pyodide.org/en/stable/index.html) (currently Python
3.12 only).
## Test Plan
https://github.com/user-attachments/assets/7bda8ef7-19fb-4c2f-8e62-8e49a1416be1
