feat(武器系统): 添加灵魂等级机制并重构武器升级逻辑

- 在UI中添加灵魂资源显示和操作按钮
- 修改武器升级公式加入灵魂等级系数
- 实现灵魂的提取和镶嵌功能
- 为武器卡牌添加灵魂等级颜色映射
- 初始化玩家灵魂资源为10个

scripts/Contents/Weapons/MushroomPickaxe.gd

@@ -2,9 +2,9 @@
 extends Weapon
 
 func update(to: int, origin: Dictionary, _entity: EntityBase):
-	origin["atk"] += 0.5 * to
-	origin["rate"] += 0.02 * to
-	origin["count"] += 1 * level
+	origin["atk"] += 1 * to * soulLevel
+	origin["rate"] += 0.04 * to * soulLevel
+	origin["count"] += 1 * to * soulLevel
 	return origin
 func attack(entity: EntityBase):
 	var weaponPos = entity.findWeaponAnchor("normal")