Display rotated elements

Depends on https://gitlab.com/arkindex/backend/-/issues/788

This merge request only concern displaying rotated elements, and not editing those parameters.

When an element has a rotation, the InteractiveImage should take that into account when displaying it, applying an SVG transformation to the polygon and image.

Three main cases need to be supported at this stage:

• A page is rotated, no children elements
• A page is rotated, with some children elements also rotated using the same parameters
• A page is NOT rotated, but a single text line is rotated