补全防御塔组装与介绍描述功能

- RepoForm.CombineArea：防御塔组装，直接继承所有组件的属性
- ItemDescUtility：根据属性构建不同的 ItemDescForm 的文本

Assets/GameMain/Scripts/Components/TowerController.cs

@@ -5,7 +5,7 @@ using UnityEngine;
 namespace Components
 {
     [DisallowMultipleComponent]
-    public class DefenseTowerController : MonoBehaviour
+    public class TowerController : MonoBehaviour
     {
         private const string AttackRangeIndicatorObjectName = "AttackRangeIndicator";
         private const int MinTowerLevel = 0;
@@ -35,12 +35,12 @@ namespace Components
             ResolveComponents();
         }
 
-        public void OnInit(DefenseTowerStatsData stats)
+        public void OnInit(TowerStatsData stats)
         {
             OnInit(stats, MinTowerLevel);
         }
 
-        public void OnInit(DefenseTowerStatsData stats, int towerLevel)
+        public void OnInit(TowerStatsData stats, int towerLevel)
         {
             ResolveComponents();
             if (stats == null)