Hopefully this now works with both OSX and Windows... I tried to create platform specific properties everywhere I could. All Windows build tasks for VSCode seem to be working correctly now.
Still need to fix up a few lingering things. Need to figure out how the original sln file was functioning with Release configuration without having a Release config set up. Would also be nice to have some way to install and run the powershell script from code, so it would be as simple as creating the folder for the new project > right click > open with Code > (run command from pallette for new Nez project from template)