This commit adds the possibility to horizontally/vertically mirror and
rotate the shape of an image. We've introduced a new sub-option for
image shapes called "Transform". This new option is not available for
certain shapes:
- If the transform will have no effect (a vertically and horizontally
symmetrical shape).
- With some animations, if the animation is too complex for the system
to work.
- For "devices" shapes because they are too specific for the option to
work. And anyway "devices" shapes are already available horizontally
flipped in the list.
task-3094258
Part-of: odoo/odoo#119197
Benjamin Vray
fbb395021d