feat(武器系统): 添加武器升华选项功能

实现武器升华选项系统，允许为武器添加可选的强化效果。主要修改包括：
1. 新增 SublimateOption 类用于定义升华选项
2. 在 Weapon 类中添加 storeExtra 字典和相关方法用于存储额外属性
3. 为 Tree 武器实现具体的升华选项
4. 添加调试标记 debugRebuild

scripts/Structs/SublimateOption.gd

@@ -0,0 +1,15 @@
+class_name SublimateOption
+
+var displayName: String = "升华"
+var description: String = "描述"
+var executor: Callable = func(_weapon: Weapon, _entity: EntityBase): return
+
+func _init(displayNames: String, descriptions: String, executors: Callable):
+	displayName = displayNames
+	description = descriptions
+	executor = executors
+
+func apply(entity: EntityBase, index: int):
+	var weapon = entity.weapons[index]
+	if weapon is Weapon:
+		executor.call(weapon, entity)