Before this commit, some images would display incorrectly orientated.

This typically happens for images taken from a non-standard orientation
by some phones or other devices that are able to report orientation.

The specified transposition is applied to the image before all other
operations, because all of them expect the image to be in its final
orientation, which is the case only when the first row of pixels is the top
of the image and the first column of pixels is the left of the image.

Moreover the EXIF tags will not be kept when the image is later saved, so
the transposition has to be done to ensure the final image is correctly
orientated.

closes odoo/odoo#38717

X-original-commit: 0f8e132e
Signed-off-by: Sébastien Theys (seb) <seb@odoo.com>