Add Cmdlet to Instantiate a FrooxEngine World from DataTree Object

[stiefeljackal]

The JSON produced from decompressing a brson or any of the previous compression algorithms produce a JSON model of the world. However, the contents within this JSON is rather verbose and difficult to modify. As a response, perhaps there should be a way to create the World object within PowerShell that can then be altered and exported back to the DataTree model.

Therefore, the first cmdlet to create is one where a world is instantiated from the DataTree's JSON.