Fixup for workflow call

Move to src based setup

Remove support for Python 2

Add test for conversion of BaseCEnum to c_int

Test for implicit conversion to c_int which is deprecated in Python3.11.
Use Pytest to run tests, and remove unused/old tests.

Fix basecenum not able to bind methods

Due to the newly added is_initialized, it was
no longer possible to bind methods to a BaseCEnum
this is fixed by adding a is_initialized method
to BaseCEnum.

Add check that object is done initialized before calling bound functions

Change pypi to use token

Fix ArgumentError handling

Closes #30

Convert ArgumentError to TypeError when calling C function

ArgumentError belongs to ctypes, and the fact that we are using ctype is
just an implementation details. In order to catch that exception, ctypes
has to be imported as well, so that implementation detail might spread
through the code base.
By converting it to a TypeError, ctypes stays confined inside cwrap,
which also makes it easier for user to drop methods based on a C
implementation for a pure python implmentation

The error message in the exception now looks like this

`Argument 4: cannot create a <class 'ctypes.c_double'> from the given
value [1, 2, 3] (<type 'list'>)`

It still mentions ctypes, and it is not trivial to get rid of it while
maintinaing the message as informative as it is now. The content of the
message is arguably not part of the API so I decided to not investigate
this further

Merge pull request #26 from andreabrambilla/py3win

Support Python 3 on Windows