feat(battle-engine): close the AI-simulation subsystem (verbatim)

Copied the 89 uncopied AI*SimulationUtility/extension files defining the
AIVirtualCard/AIVirtualField extension methods; the compile loop then auto-closed
the revealed type deps (~3049 files total, drift-clean). 10.0k -> 62 errors.

SVSim.BattleEngine/Engine/Wizard/RoomBattle2PickFinishTask.cs

@@ -0,0 +1,12 @@
+using Wizard.RoomMatch;
+
+namespace Wizard;
+
+public class RoomBattle2PickFinishTask : RoomBattleFinishTask
+{
+	public RoomBattle2PickFinishTask(TwoPickFormat deckFormatType, RoomConnectController.BattleRule rule)
+		: base(isConvention: false, isGathering: false)
+	{
+		base.type = RoomTwoPickApiVariation.GetApiType(deckFormatType, rule, RoomTwoPickApiVariation.VariationType.Finish);
+	}
+}