fix: 调整子弹伤害和角色冷却时间

- 提高FireScan子弹的伤害值从5到20
- 调整Chick角色的攻击冷却时间，将attackCooldownMap[2]从100增加到2000
- 移除Wave中未使用的chick变量

scripts/Contents/Bullets/FireScan.gd

@@ -3,7 +3,7 @@ class_name FireScan
 
 func register():
 	speed = 10
-	damage = 5
+	damage = 20
 
 func ai():
 	PresetBulletAI.forward(self, rotation)

scripts/Contents/Characters/Chick.gd

@@ -10,7 +10,7 @@ func register():
 	fields[FieldStore.Entity.MOVEMENT_SPEED] = 0.4
 	attackCooldownMap[0] = 500
 	attackCooldownMap[1] = 6000
-	attackCooldownMap[2] = 100
+	attackCooldownMap[2] = 2000
 	attackCooldownMap[3] = 500
 	sprintMultiplier = 30
 func spawn():

scripts/Contents/Wave.gd

@@ -24,10 +24,9 @@ static var data = []
 static func customStart():
 	var furryr = EntityBase.generate(preload("res://components/Characters/Bear.tscn"), MathTool.randv2_range(500), true, false)
 	var kukemc = EntityBase.generate(preload("res://components/Characters/KukeMC.tscn"), MathTool.randv2_range(500), true, false)
-	var chick = EntityBase.generate(preload("res://components/Characters/Chick.tscn"), MathTool.randv2_range(500), true, false)
+	EntityBase.generate(preload("res://components/Characters/Chick.tscn"), MathTool.randv2_range(500), true, false)
 	furryr.currentFocusedBoss = kukemc
 	kukemc.currentFocusedBoss = furryr
-	chick.currentFocusedBoss = furryr
 static func create(
 		entity_: PackedScene,
 		minCount_: int = 1,