feat(角色): 添加Gobo角色及相关资源

添加Gobo角色，包括武器、召唤物和治疗导弹功能
- 新增Gobo角色模型和动画资源
- 实现Gobo武器系统，可召唤Gobo单位
- 添加治疗导弹功能，Gobo受伤时会发射治疗友军
- 优化实体基础类，添加生命值初始化方法
- 修改子弹伤害判定逻辑，支持友军伤害设置

scripts/Contents/Weapons/Gobo.gd

@@ -0,0 +1,13 @@
+@tool
+extends Weapon
+
+func update(to: int, origin: Dictionary, _entity: EntityBase):
+    origin["health"] += 5 * to * soulLevel
+    origin["percent"] += 0.02 * to * soulLevel
+    return origin
+func attack(entity: EntityBase):
+    var gobo = entity.summon(ComponentManager.getSummon("Gobo"))
+    if gobo is GoboSummon:
+        gobo.percent = readStore("percent")
+        gobo.initHealth(readStore("health"))
+    return true

scripts/Contents/Weapons/Gobo.gd.uid

@@ -0,0 +1 @@
+uid://cbg3xkg1giv35

scripts/Contents/Weapons/Shield.gd

@@ -7,7 +7,6 @@ func update(to: int, origin: Dictionary, _entity: EntityBase):
 	return origin
 func attack(entity: EntityBase):
 	var summon = entity.summon(ComponentManager.getSummon("Shield"))
-	if !summon: return true
-	summon.fields[FieldStore.Entity.MAX_HEALTH] = readStore("atk")
-	summon.health = summon.fields[FieldStore.Entity.MAX_HEALTH]
+	if summon:
+		summon.initHealth(readStore("atk"))
 	return true