feat(召唤物): 添加哈基米召唤物及相关功能

添加新的哈基米(HJM)召唤物，包括动画资源、攻击逻辑和武器配置。主要变更：
- 新增HJM召唤物脚本和场景，包含6帧动画
- 添加HJM专属子弹类型HJMAttack
- 修改SummonBase基类添加atk属性
- 调整武器系统支持召唤物攻击
- 优化子弹系统支持召唤者追踪
- 降低LGBT旗帜召唤物的生命值

scripts/Statemachine/BulletBase.gd

@@ -23,6 +23,7 @@ class_name BulletBase
 @onready var texture: AnimatedSprite2D = $"%texture"
 
 var launcher: EntityBase = null
+var launcherSummoned: EntityBase = null
 var spawnInWhen: float = 0
 var spawnInWhere: Vector2 = Vector2.ZERO
 var destroying: bool = false
@@ -32,6 +33,9 @@ var initialSpeed: float = 0
 
 func _ready():
 	initialSpeed = speed
+	if launcher.isSummon():
+		launcherSummoned = launcher
+		launcher = launcher.myMaster
 	register()
 	area_entered.connect(hit)
 	spawnInWhen = WorldManager.getTime()