Feature: Background Images

[MarkusSagen]

In presentation software s.a. Powerpoint or Google Presentations it is possible to have background images and templates

Would be great to add something similar to this for branding your presentations
Mostly I would like this so that I can continue to use presenterm at work where they have certain templates to follow

[BenFradet]

a quick hack: presenterm respects your terminal emulator's transparency so you could set your wallpaper to be the background you want and run your presentation