The new code for MeshSplit

Hello Giulio
I tested the command and Grasshopper, I still have some problems.
Rhino 8 SR0 2022-12-6 (Rhino WIP, 8.0.22340.12305, Git hash:master @ d4a00cc453abcfe9fc7a8e109856bf957cdda0d3)
License type: Commerciale, build 2022-12-06
License details: Cloud Zoo
Expires on: 2023-01-20

You will find the file with data here