feat: 添加新的角色Hen，更新Chick角色的攻击逻辑，增强Boss状态条和子弹功能

scripts/Contents/Characters/Chick.gd

@@ -1,6 +1,17 @@
 extends EntityBase
 class_name Chick
 
+var angle = 0
 func _ready():
 	fields[FieldStore.Entity.MAX_HEALTH] = 1000
+	fields[FieldStore.Entity.MOVEMENT_SPEED] = 0.25
 	super._ready()
+
+func ai():
+	move(currentFocusedBoss.position - position)
+	if tryAttack(0):
+		angle += 20
+func attack(type):
+	if type == 0:
+		var weaponPos = findWeaponAnchor("normal")
+		BulletBase.generate(preload("res://components/Bullets/Diamond.tscn"), self, weaponPos, deg_to_rad(angle))