Add support for `ExcludeAssets` tag on NuGet packages

What problem will this solve?
Using MSBuild from C# requires referencing some assemblies whose dependencies are only required at build time. https://learn.microsoft.com/en-us/visualstudio/msbuild/find-and-use-msbuild-versions?view=vs-2022 states that you should add ExcludeAssets="runtime" to achieve this -- which (to my knowledge) is currently not possible within premake.

What might be a solution?
A potential avenue to adding this without needing to change NuGet package syntax would be to add some premake specific features to the NuGet package string:

nuget
{
    "Bar.Foo:1.0.0!ExcludeRuntime"
}

Or alternatively a secondary NuGet package API with more control:

nuget_new
{
    BarFoo = {
        Name = "Bar.Foo",
        Version = "1.0.0",
        ExcludeAssets = "runtime"
    }
}

I appreciate these are not necessarily the cleanest solutions -- they're just what came to mind given NuGet packages already have an interface being used in existing scripts which would break if it were changed.

What other alternatives have you already considered?
I suspect there may be a way to declare a NuGet package exclusively through vsprops but I am not an MSBuild expert and could not find a way to achieve this.

Anything else we should know?
N/A

Start by reviewing the existing NuGet package string handling and the vsprops/MSBuild path mentioned in the issue. Determine how ExcludeAssets="runtime" should be represented without breaking existing package syntax, then verify that generated project metadata applies the requested setting.