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/SetDamageInfo.cs

@@ -0,0 +1,22 @@
+using System;
+using System.Collections.Generic;
+
+public class SetDamageInfo : DamageModifier
+{
+	public int SetDamage { get; private set; }
+
+	public SetDamageInfo(int setDamage, string damageType, CardBasePrm.ClanType damageClan, bool isUseClass, int order)
+	{
+		SetDamage = setDamage;
+		base.DamageType = new List<string>();
+		base.DamageType.AddRange(damageType.Split(new string[1] { "_and_" }, StringSplitOptions.None));
+		base.DamageClan = new List<CardBasePrm.ClanType> { damageClan };
+		base.IsUseClass = isUseClass;
+		base.OrderCount = order;
+	}
+
+	public override int Calc(int damage)
+	{
+		return SetDamage;
+	}
+}