feat(武器): 添加河豚刺针武器及其相关资源

新增河豚刺针武器，包含以下内容：
- 添加河豚武器图标和音效资源
- 实现Needle子弹类及其反弹逻辑
- 创建Hetun武器类实现散射攻击
- 添加子弹特效和碰撞检测
- 更新公鸡角色默认武器配置

scripts/Contents/Bullets/Needle.gd

@@ -0,0 +1,21 @@
+extends BulletBase
+class_name NeedleBullet
+
+var forwarding: bool = false
+
+func spawn():
+	hitbox.disabled = true
+func ai():
+	PresetBulletAI.forward(self , rotation)
+	if forwarding:
+		speed += 0.5
+	else:
+		speed -= 0.25
+		if speed <= 0:
+			forwarding = true
+			hitbox.disabled = false
+func succeedToHit(_dmg: float, entity: EntityBase):
+	var effect = EffectController.create(ComponentManager.getEffect("Dustdown"), entity.position)
+	effect.rotation = rotation
+	effect.shot()
+	rotation = Vector2.from_angle(rotation).bounce((entity.position - position).normalized()).angle()

scripts/Contents/Bullets/Needle.gd.uid

@@ -0,0 +1 @@
+uid://whqgw065ifss

scripts/Contents/Bullets/NuclearBomb.gd

@@ -16,7 +16,7 @@ func spawn():
 	anchor.global_rotation = 0
 func ai():
 	speed *= 0.99
-	PresetBulletAI.forward(self, rotation)
+	PresetBulletAI.forward(self , rotation)
 	if timeLived() > countdown:
 		tryDestroy()
 	else: