D2k Starport

- OG fly path and Frigate behaviour
- BulkProductionQueue
- ProductionStarport trait
- OG palette widget behavior for Bulk queue
- Purchase button for each BulkProduction
- Delivery timer for each BulkProduction

OpenRA.Mods.Common/Activities/UnloadCargo.cs

@@ -27,6 +27,7 @@ namespace OpenRA.Mods.Common.Activities
 		readonly Mobile mobile;
 		readonly bool assignTargetOnFirstRun;
 		readonly WDist unloadRange;
+		int delayBetweenUnloads = 0;
 
 		Target destination;
 		bool takeOffAfterUnload;
@@ -96,6 +97,13 @@ namespace OpenRA.Mods.Common.Activities
 
 			if (cargo.CanUnload())
 			{
+				if (delayBetweenUnloads > 0)
+				{
+					delayBetweenUnloads--;
+					return false;
+				}
+
+				delayBetweenUnloads = cargo.Info.BetweenUnloadDelay;
 				foreach (var inu in notifiers)
 					inu.Unloading(self);