Proof of concept .NET 6/8 console application using pythonnet 3 to run the Python package of SaxonC HE 12 (saxonche) with .NET code

The saxonche Python package needs to be installed first with e.g. pip install saxonche. You also need to make sure you set/adjust the environment variable PYTHONNET_PYDLL to identify your python3x.dll e.g. C:\Users\username\AppData\Local\Programs\Python\Python312\python312.dll on Windows or e.g. /Applications/Xcode.app/Contents/Developer/Library/Frameworks/Python3.framework/Versions/3.9/lib/libpython3.9.dylib on macOS.