Description
Is your feature request related to a problem? Please describe.
Currently, spreadsheets have a default background that can only be changed by changing the cell's colour. Nowadays, if insert an image is wanted it must be the first object in order to have it at the back. But despite this workaround, it unable clicking on cells and also work in the addition of objects.
Describe the solution you'd like
It would be excellent to add an image as a background and being able to resize if necessary.
Describe alternatives you've considered
The second option could be forcing back the image object, but it keeps the issue commented before.
Additional context
It would be extremely useful and powerful in terms on dashboards style. This is one aspect of the product that is currently behind its competitors and that can be way beneficial to be closer in customization's term. Some companies are now offering dashboard services (eg for PowerBI) in which during its styling process they create a Photoshop project to have a .png and at the very end of the dashboard generation they beautify the final product with it.