feat: 添加新角色Kernyr和子弹Yangyi及相关资源

添加新角色Kernyr及其相关资源文件，包括角色脚本、场景和贴图
添加新子弹类型Yangyi及其相关资源文件，包括子弹脚本、场景和贴图
修改Wave.gd添加Kernyr作为测试波次
调整QKSword.gd和Parrier.gd的数值效果
扩展Bullet.gd的selfRotate方法支持仅旋转贴图

scripts/Contents/Characters/Kernyr.gd

@@ -0,0 +1,21 @@
+extends EntityBase
+class_name Kernyr
+
+func register():
+	fields[FieldStore.Entity.MAX_HEALTH] = 2000
+	fields[FieldStore.Entity.MOVEMENT_SPEED] = 0.1
+	fields[FieldStore.Entity.OFFSET_SHOOT] = 20
+	attackCooldownMap[0] = 300
+func ai():
+	PresetEntityAI.follow(self , currentFocusedBoss)
+	tryAttack(0)
+func attack(type: int):
+	if type == 0:
+		for bullet in BulletBase.generate(
+			ComponentManager.getBullet("Yangyi"),
+			self ,
+			position,
+			position.angle_to_point(currentFocusedBoss.position)
+		):
+			if bullet is YangyiBullet:
+				pass

scripts/Contents/Characters/Kernyr.gd.uid

@@ -0,0 +1 @@
+uid://m28dwfwmmhmh