Enable to access all atributes of a pyotb object

Currently, it is possible to access outputs like this:

pyotb_obj.out
pyotb_obj['out']

However, this is not possible for other parameters, whereas it can be useful for applications that have outputs that are not output images, such as ReadImageInfo. What would be suitable:

info = pyotb.ReadImageInfo('my_image.tif', otb_stdout=False)
info.originy
info['gcp.count']