Decouple editor from using internal editor state

[Sandvoxel]

Make the editor state inferred using something like bevy's default macro to allow users to define there own state

enum AppState {
   [default]
   MainMenu,
   [editor]
   Editor,
   InGame
}

[naomijub]

If you run without default features it will execute game mode. This might be helpful while we work on this issue

[rewin123]

I think this would be a really useful feature if you need to hide any editor ui and its logic even if the editor plugin is plugged in