Rewrite production tabs (again): Avoid doing a pile of work every tick; support multiple queue types grouped under one category; Tab numbering is sticky.

mods/cnc/rules/structures.yaml

@@ -25,6 +25,7 @@ FACT:
 		Facing: 108
 	ProductionQueue@Building:
 		Type: Building
+		Group: Building
 		BuildSpeed: .4
 		LowPowerSlowdown: 3
 		QueuedAudio: bldging1.aud
@@ -33,6 +34,7 @@ FACT:
 		CancelledAudio: cancel1.aud
 	ProductionQueue@Defense:
 		Type: Defense
+		Group: Defense
 		BuildSpeed: .4
 		LowPowerSlowdown: 3
 		QueuedAudio: bldging1.aud
@@ -165,6 +167,7 @@ PYLE:
 		Produces: Infantry
 	ProductionQueue:
 		Type: Infantry
+		Group: Infantry
 		BuildSpeed: .4
 		LowPowerSlowdown: 3
 		QueuedAudio: bldging1.aud
@@ -204,6 +207,7 @@ HAND:
 		Produces: Infantry
 	ProductionQueue:
 		Type: Infantry
+		Group: Infantry
 		BuildSpeed: .4
 		LowPowerSlowdown: 3
 		QueuedAudio: bldging1.aud
@@ -245,6 +249,7 @@ AFLD:
 		Produces: Vehicle
 	ProductionQueue:
 		Type: Vehicle
+		Group: Vehicle
 		BuildSpeed: .4
 		LowPowerSlowdown: 3
 		QueuedAudio: bldging1.aud
@@ -287,6 +292,7 @@ WEAP:
 		Produces: Vehicle
 	ProductionQueue:
 		Type: Vehicle
+		Group: Vehicle
 		BuildSpeed: .4
 		LowPowerSlowdown: 3
 		QueuedAudio: bldging1.aud
@@ -413,6 +419,7 @@ HPAD:
 	RallyPoint:
 	ProductionQueue:
 		Type: Plane
+		Group: Aircraft
 		BuildSpeed: .4
 		LowPowerSlowdown: 3
 		QueuedAudio: bldging1.aud

mods/cnc/rules/tech.yaml

@@ -53,6 +53,7 @@ BIO:
 		Produces: Biolab
 	ProductionQueue:
 		Type: Biolab
+		Group: Infantry
 		BuildSpeed: .4
 		LowPowerSlowdown: 3
 		QueuedAudio: bldging1.aud