[FEATURE REQUEST] cumsum and cumprod

[kwagyeman]

Support for cumsum and cumprod: https://numpy.org/doc/2.0/reference/generated/numpy.cumsum.html, https://numpy.org/doc/2.0/reference/generated/numpy.cumprod.html.

Would be a nice to have. bincount is more important.

[v923z]

Since bincount is already in master, I could look into this. I would actually use this opportunity to implement the out keyword for similar functions.