add crate actors for legacy map compatibility

mods/cnc/rules/misc.yaml

@@ -25,6 +25,16 @@ CRATE:
 		NoBaseSelectionShares: 120
 		Units: mcv
 
+WCRATE:
+	Inherits: ^Crate
+	Tooltip:
+		Name: Wooden Crate
+
+SCRATE:
+	Inherits: ^Crate
+	Tooltip:
+		Name: Steel Crate
+
 mpspawn:
 	EditorOnlyTooltip:
 		Name: (multiplayer player starting point)

mods/ra/rules/misc.yaml

@@ -117,6 +117,18 @@ HEALCRATE:
 		SelectionShares: 1
 		Effect: heal
 
+WCRATE:
+	Inherits: ^Crate
+	Tooltip:
+		Name: Wooden Crate
+	RenderSprites:
+		Image: wcrate
+
+SCRATE:
+	Inherits: ^Crate
+	Tooltip:
+		Name: Steel Crate
+
 CAMERA:
 	EditorOnlyTooltip:
 		Name: (reveals area to owner)