feat(武器): 添加咸亨记账簿武器及茴香豆子弹

实现新的HXD武器系统，包括：
- 咸亨记账簿武器，可发射反弹的茴香豆子弹
- 茴香豆子弹能在敌人间反弹并造成伤害
- 添加相关资源文件及场景配置
- 将新武器添加到公鸡角色的武器库中

scripts/Contents/Weapons/HXD.gd

@@ -0,0 +1,17 @@
+@tool
+extends Weapon
+
+func update(to: int, origin: Dictionary, _entity: EntityBase):
+    origin["atk"] += 1 * to * soulLevel
+    return origin
+func attack(entity: EntityBase):
+    for i in readStore("atk"):
+        for bullet in BulletBase.generate(
+            ComponentManager.getBullet("HXD"),
+            entity,
+            entity.findWeaponAnchor("normal"),
+            entity.findWeaponAnchor("normal").angle_to_point(get_global_mouse_position()) + deg_to_rad(randf_range(-1, 1) * 40)
+        ):
+            if bullet is HXDBullet:
+                bullet.maxBouncedTime = readStore("atk")
+                bullet.baseDamage = readStore("atk")

scripts/Contents/Weapons/HXD.gd.uid

@@ -0,0 +1 @@
+uid://0xfj35jvi7ym