Add an API to create surfaces based on a set of points

[sgenoud]

No description provided.

[wuzejinCN]

Hi sgenoud! Thank you for your selfless dedication and excellent open source project. I have implemented such a function, which can directly generate Three.js surfaces, but in Repliccad, I seem to have not found a package for surface number types. If this library also supports surfaces, I can add surface fitting functionality.