Support simple auto-paint options?

[techninja]

At times it makes more sense for a given drawing to only draw the outlines, or to only draw the fills. This is something that's pretty specific to each drawing, and without an option for it, it requires modifying the drawing itself to achieve the effect (which for some drawings can be quite tricky).

I propose a simple set of three radio buttons below the Start button, to look a bit like the following:

• Draw fills & outlines (default)
• Draw only outlines
• Draw only fills

The setting would reset for every new drawing. Could even use a less boring display for radio buttons like some kind of block display demo'd here.

[techninja]

@oskay Is assigned to vet these options for central Print mode. We're trying to keep the available buttons pared down there and need some direction if this is even something we care about there.

[techninja]

This issue was moved to evil-mad/robopaint-mode-print#1