We currently interact with prefabs via ManageGameObjects and ManageAssets. I'm thinking we could have a dedicated tool to manage them.

• It'll make the code for ManageGameObjects and ManageAssets much more manageable without having to wrangle with prefab APIs
• It will be a natural place to support more prefab operations.
  • What we currently support
    • Instantiating prefabs (ManageGameObject)
    • Create prefabs (ManageGameObject, create the object and save as prefab)*
      • This works only when it's a new object, not a pre-existing one
    • Modify prefabs (ManageAsset)
    • Save prefab (ManageGameObject and ManageAsset) we don't have a way to save a prefab explicitly
  • What else I'd like to support
    • Opening prefabs
    • Closing prefabs

It's something i'm happy to do but I'm for someone else to jump in. I'd like set up #214 first so it can roll out with testing