推进计时器逻辑的集中管理

- 将敌人的攻击计时任务放到基类中进行创建
- 将 EnemySpawnScheduler 敌人生成调度器的刷怪计时任务迁移到 TimerComponent

Assets/GameMain/Scripts/Runtime/CustomComponent/EnemyManager/EnemyManagerComponent.cs

@@ -58,6 +58,7 @@ namespace SepCore.EnemyManager
             _spawnCts?.Dispose();
             _spawnCts = null;
             _enemyRegistry = null;
+            _spawnScheduler?.Reset();
             _spawnScheduler = null;
             _entity = null;
         }
@@ -71,7 +72,7 @@ namespace SepCore.EnemyManager
             _duration = _baseDuration;
             _currentLevel = level.Id;
 
-            _spawnScheduler.Init(level);
+            _spawnScheduler.Init(level, OnWaveSpawn);
             _enemyRegistry.Clear();
             _currentSpawnEnemyId = 0;
         }
@@ -79,13 +80,14 @@ namespace SepCore.EnemyManager
         public void OnUpdate(float elapseSeconds, float realElapseSeconds)
         {
             _enemyRegistry.PruneInvalidEntries();
-            var spawnRequests = _spawnScheduler.Tick(elapseSeconds);
-            foreach (var request in spawnRequests)
+            _spawnScheduler.Tick(elapseSeconds);
+        }
+
+        private void OnWaveSpawn(EnemyType enemyType, int count)
+        {
+            for (int j = 0; j < count; j++)
             {
-                for (int j = 0; j < request.Count; j++)
-                {
-                    SpawnEnemyAsync(request.EnemyType).Forget();
-                }
+                SpawnEnemyAsync(enemyType).Forget();
             }
         }