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/Cute/PCPlatform.cs

@@ -0,0 +1,10 @@
+using LitJson;
+
+namespace Cute;
+
+public abstract class PCPlatform
+{
+	public abstract void Parse(JsonData response);
+
+	public abstract PaymentPCStartParams SetParameter(string productId, bool isAlertAgree, bool isAlertActive);
+}