Create something like ktk.geometry.format?

[felixchenier]

Something that could take an Nx3 array and create an Nx4 array from it directly? Like:

ktk.geometry.format(data : NDArray, fill : float = 1.0) -> NDArray

where an Nx3 array would become an Nx4 array with the third element filled with fill, and an Nx3x3 rotation matrix series would become an Nx4x4 transformation matrix series?

I know it would be practical, but I don't know if it needs a proper function or an howto instead.