Support python 3.11

[Miggets7]

When trying to build it in python 3.11 the following error appears:

 fatal error: longintrepr.h: No such file or directory
#0 57.93         211 |   #include "longintrepr.h"

Maybe this hint can help: https://github.com/cython/cython/issues/4461#issue-1049152615

If I can be of any assistance, let me know.

Cheers