Filter: Create a filter that can generate XYZ index coordinates for an Image Geometry.

[imikejackson]

Some users need this for input files. Essentially we can create an UInt32DataArray with 3 components (XYZ). So when printed to a file the users have their XYZ index coordinates.

Actually, we should give them the option of what to use for output: Int32 (which is more common sense for an index) or Float32 since that could be used directly for a Vertex geometry or something like that.

This should go in SimplNXCore