[3.13] gh-136769: Include fixed-width integers in the fundamental data types table...

[3.13] gh-136769: Include fixed-width integers in the fundamental data types table (GH-136784) (#136786)

gh-136769: Include fixed-width integers in the fundamental data types table (GH-136784)

Fixed-sized types, like ``c_int32``, are currently missing from the fundamental data types table
in the ``ctypes`` documentation. This commit adds them, and  notes that ``c_[u]int8`` is an alias
of ``c_[u]byte``.
(cherry picked from commit acefb978dcb5dd554e3c49a3015ee5c2ad6bfda1)

Co-authored-by: Sina Zel taat <111974143+SZeltaat@users.noreply.github.com>