This commit adds a new category of image shapes: Devices. The purpose is to give the possibility to add images in device mockups with the image shapes. To use it correctly the image needs to be in a specific ratio depending on the shape. To help the user to have the perfect render, an average resolution is shown when hovering the thumbnail of the shape. task-2666049 closes odoo/odoo#79068 Related: odoo/design-themes#525 Signed-off-by: Quentin Smetz (qsm) <qsm@odoo.com>