Support cross-platform #12
Description
Major current blocker is the LibUsbDotNet support of .NetStandard 2. Pull request here: LibUsbDotNet/LibUsbDotNet#33
ReactiveUI has some wonky-ass dependencies on a specific version of System.Reactive.Interfaces, but should support .NetStandard 2 just fine. Going to wind up removing ReactiveUI, disregard.
Final step of code generation process was done via T4 template, which is not cross-platform. The code generation itself uses Roslyn which won't be an issue on other platforms. Need to figure out an elegant way to write to project files.