Add WithHarvesterSpriteBody

And move PrefixByFullness there.
Also put it into Mods.Cnc, as RA is the only shipping mod
using this.

mods/ra/rules/vehicles.yaml

@@ -320,7 +320,6 @@ HARV:
 	RevealsShroud:
 		Range: 4c0
 	WithHarvestAnimation:
-		PrefixByFullness: empty-, half-, full-
 	WithDockingAnimation:
 	GpsDot:
 		String: Harvester
@@ -337,6 +336,9 @@ HARV:
 	Explodes:
 		RequiresCondition: !no-ore
 		Weapon: OreExplosion
+	WithHarvesterSpriteBody:
+		ImageByFullness: harvempty, harvhalf, harv
+	-WithFacingSpriteBody:
 
 MCV:
 	Inherits: ^Vehicle