Merge pull request #5280 from WolfGaming/techleveltraits

TechTreeTrait system has been made

OpenRA.Game/Map/Map.cs

@@ -31,6 +31,7 @@ namespace OpenRA
 		public bool? AllyBuildRadius;
 		public bool? FragileAlliances;
 		public int? StartingCash;
+		public string TechLevel;
 		public bool ConfigurableStartingUnits = true;
 		public string[] Difficulties = { };
 

OpenRA.Game/Network/Session.cs

@@ -186,6 +186,7 @@ namespace OpenRA.Network
 			public bool Fog = true;
 			public bool AllyBuildRadius = true;
 			public int StartingCash = 5000;
+			public String TechLevel = "none";
 			public string StartingUnitsClass = "none";
 			public bool AllowVersionMismatch;
 			public string GameUid;