feat(武器): 添加火山武器及其子弹逻辑

实现火山武器系统，包括：
1. 添加火山武器场景和脚本，支持旋转子弹和伤害计算
2. 新增子弹自旋转AI预设
3. 为公鸡角色添加火山武器配置
4. 实现武器升级效果随灵魂等级提升

scripts/Contents/AIPresets/Bullet.gd

@@ -15,3 +15,5 @@ static func trace(bullet: BulletBase, target: Vector2, speed: float):
 	)
 static func faceToMouse(bullet: BulletBase):
 	bullet.rotation = bullet.position.angle_to_point(bullet.get_global_mouse_position())
+static func selfRotate(bullet: BulletBase, speed: float):
+	bullet.rotation += deg_to_rad(speed)

scripts/Contents/Bullets/Volcano.gd

@@ -0,0 +1,8 @@
+extends BulletBase
+class_name Volcano
+
+var rotates: float = 0
+
+func ai():
+	PresetBulletAI.selfRotate(self, rotates)
+	PresetBulletAI.lockLauncher(self, launcher, true)

scripts/Contents/Bullets/Volcano.gd.uid

@@ -0,0 +1 @@
+uid://ci5hswfhck5as

scripts/Contents/Weapons/Volcano.gd

@@ -0,0 +1,14 @@
+@tool
+extends Weapon
+
+func update(to: int, origin: Dictionary, _entity: EntityBase):
+	origin["atk"] += 5 * to * soulLevel
+	origin["count"] += 1 * soulLevel
+	origin["rotate"] += 0.25 * to * soulLevel
+	return origin
+func attack(entity: EntityBase):
+	for i in readStore("count"):
+		for j in BulletBase.generate(ComponentManager.getBullet("Volcano"), entity, entity.findWeaponAnchor("normal"), deg_to_rad(360.0 / readStore("count") * i)):
+			var bullet: Volcano = j
+			bullet.damage = readStore("atk")
+			bullet.rotates = readStore("rotate")

scripts/Contents/Weapons/Volcano.gd.uid

@@ -0,0 +1 @@
+uid://cbihum34xs8ev