Serializes the scene data into a JSON string.
The scene data includes rooms, anchors, and their associated properties. The method allows for the specification of the coordinate system (Unity or Unreal) and whether to include the global mesh data.
ParameterscoordinateSystemThe coordinate system to use for the serialization (Unity or Unreal).
includeGlobalMeshA boolean indicating whether to include the global mesh data in the serialization. Default is true.
ReturnsA JSON string representing the serialized scene data.