Parses a JSON string representation of a Vector3 and returns an object.
A JSON string, either in the form [x,y,z] or {"x": 0, "y": 0, "z": 0}
[x,y,z]
{"x": 0, "y": 0, "z": 0}
A parsed Vector3.
Parses a JSON string representation of a Vector3 and returns an object.