Add dpsimpyvillas to wheels

[stv0g]

Closes #364

[stv0g]

Local builds of Python wheels now include dpsimpyvillas:

[root@8d4b4661b6f1 src]# python3 setup.py bdist_wheel
...
removing build/bdist.linux-x86_64/wheel
[root@8d4b4661b6f1 src]# python3 -m venv venv
[root@8d4b4661b6f1 src]# . venv/bin/activate
(venv) [root@8d4b4661b6f1 src]# pip install dist/dpsim-1.1.1-cp310-cp310-linux_x86_64.whl
Processing ./dist/dpsim-1.1.1-cp310-cp310-linux_x86_64.whl
Installing collected packages: dpsim
Successfully installed dpsim-1.1.1
WARNING: You are using pip version 21.3.1; however, version 25.0.1 is available.
You should consider upgrading via the '/src/venv/bin/python3 -m pip install --upgrade pip' command.
(venv) [root@8d4b4661b6f1 src]# pip install numpy
Collecting numpy
  Using cached numpy-2.2.4-cp310-cp310-manylinux_2_17_x86_64.manylinux2014_x86_64.whl (16.4 MB)
Installing collected packages: numpy
Successfully installed numpy-2.2.4
WARNING: You are using pip version 21.3.1; however, version 25.0.1 is available.
You should consider upgrading via the '/src/venv/bin/python3 -m pip install --upgrade pip' command.
(venv) [root@8d4b4661b6f1 src]# python3
Python 3.10.11 (main, Apr  5 2023, 00:00:00) [GCC 12.2.1 20221121 (Red Hat 12.2.1-4)] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import dpsimpyvillas
>>> print(dpsimpyvillas.__dict__)
{'__name__': 'dpsimpyvillas', '__doc__': None, '__package__': '', '__loader__': <_frozen_importlib_external.ExtensionFileLoader object at 0x7f71e6f93eb0>, '__spec__': ModuleSpec(name='dpsimpyvillas', loader=<_frozen_importlib_external.ExtensionFileLoader object at 0x7f71e6f93eb0>, origin='/src/venv/lib64/python3.10/site-packages/dpsimpyvillas.cpython-310-x86_64-linux-gnu.so'), 'InterfaceVillas': <class 'dpsimpyvillas.InterfaceVillas'>, '__file__': '/src/venv/lib64/python3.10/site-packages/dpsimpyvillas.cpython-310-x86_64-linux-gnu.so'}
>>> help(dpsimpyvillas)

However, CI builds are failing due to VILLASnode containing some to-new symbols:

https://github.com/sogno-platform/dpsim/actions/runs/14241396940/job/39911931924?pr=374