Precompile extension for Windows

[hydrogeoscience]

Change installation file such that there are pre-compiled DLLs for most Python versions to help Windows users avoid a compile.

[trichter]

I think the best route is to create wheels and upload these to pypi. Then pip install pygtide will automatically fetch the compiled wheels if available. I can have a look and test if github actions can be used to provide these wheels automatically.

[hydrogeoscience]

Yes, doing this would be absolutely fabulous!