Release builds of Fabric should bundle

[chrisglein]

Related to this: https://github.com/microsoft/react-native-windows/issues/8116

I'm no expert on non-UWP packaged apps, but there's definitely intersection here as to where the bundle goes. One option is to embed it as a classic Win32 embedded resource, which we support (resource:// according to the docs).

The resource would need to be populated by part of the build process, which has been explored before here to create a generated RC file that is then imported here.