Improve build system and update to 23.0.3

[ryan-kipawa]

Is this what you had in mind @ecomodeller?

I tried to simplify our build process by:

• uv sync or uv build command to get up and running (see updated README.md)
• cross-platform build hook that downloads nuget packages and creates a bin folder
• single source of truth of the nuget package versions (buildUtil/packages.config)
• update CI tests to use the new build system
• pyproject.toml instead of setup.py
• updated to 23.0.3 (latest on nuget)

All tests seem to pass for Linux and Windows. I tested it on the latest dev branch of MIKE IO, and only two tests failed (one for a new EUM and one for a floating point rounding).

Things we could continue further with:

• remove MIKECoreCUtil (legacy?)
• update build actions and remove legacy ones
• include a publish action?
• update docker container (if that's still useful to have)
• remove redundant scripts (e.g. InstallPackages.bat, BuildNativeBin.bat)
• remove or update MIKECore solution - is a visual studio project still useful to have?
• automate manual eum.py updates

[JesperGr]

The NuGet packages are now specified in the packages.config - then the InstallPackages.bat and BuildNativeBin.bat are redundant, right?

[JesperGr]

The patchelf stuff for Linux should be set already by most, if not all, components already. That step can potentially be removed.

[JesperGr]

Apart from that, things looks pretty neat 🥇 👍

[ryan-kipawa]

The NuGet packages are now specified in the packages.config - then the InstallPackages.bat and BuildNativeBin.bat are redundant, right?

Right!

[ryan-kipawa]

The patchelf stuff for Linux should be set already by most, if not all, components already. That step can potentially be removed.

I noticed one component was missing it (maybe it didn't require it).

[ecomodeller]

Excellent!