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/AreaSelectEffectControlBase.cs

@@ -0,0 +1,27 @@
+using System;
+using System.Collections.Generic;
+using UnityEngine;
+
+public class AreaSelectEffectControlBase : MonoBehaviour
+{
+	[NonSerialized]
+	public Dictionary<int, ParticleSystem> _backGroundEffects = new Dictionary<int, ParticleSystem>();
+
+	[NonSerialized]
+	public readonly int BASE_EFFECT_INDEX = -1;
+
+	protected bool IsSetupEnd { get; private set; }
+
+	public virtual void SetupEnd()
+	{
+		IsSetupEnd = true;
+	}
+
+	public virtual void OnChangeSelectChapter(AreaSelectBG areaSelectBG, StorySectionData sectionData, int? sectionClassId, StoryChapterData chapterData, bool isFirstClear)
+	{
+	}
+
+	public virtual void SetActiveBGEffect(bool effect)
+	{
+	}
+}