Investigate Testing the NuGet Package Directly

[Aragas]

Investigate whether it's possible to reference the NuGet package instead of the project directly.
This should be okay since we are always building the current NuGet package on build.
The intention is to have the closest user experience as possible, since NuGet can have a few quirks by itself.

[pardeike]

Can this be closed now?

[Aragas]

Nope, haven't had the time to start this

[pardeike]

Sorry, I mixed this up with your latest PR about Lib.Harmony.Ref being used locally to avoid build errors