[v3-2020] Type replacement of objects

The latest thing added to our secret project: type-replacement of objects! You can replace the type of an object by another Phaser built-in type or another type defined by yourself (a prefab). This is very handing to transform a prototype into a real game.

[nathanmarotz]

I can't figure out editor 2 to save my life. I have read documentation but I can't even figure out block view. When I make a pack.json, it only works in pack.json and I can't figure out how to import it into my scene