[New Feature] Expand Smudge Type to be usefull for map decoration

[gangster-ppm]

Description:

Just like Overlay Type can serve as a wall, bridge, train track or resource, we'd like to propose usage for Smudge Type as decals.

possible implementation

Idea is to have a layer which always drawn on top of terrain but always under building and units. On this you can add all decor and details such as: stripes, logo, digits, cracks, junk parts, doodads and pebbles reducing amount of TMP types with pre-drawn details

Current issues:

• disappears when something was built in them, this doesn't happen in TS
• never can overlap
• render of smudges is strictly at foundation size, pixels out of foundation size would be cut

Stripes are Smudges