feat: 添加SCBlock和Bengbeng子弹类型及相关资源

feat(角色): 为Kernyr和CyberCat添加新攻击类型

refactor(角色): 更新Kernyr角色贴图和显示名称

feat(关卡): 调整测试关卡配置和敌人波次

style: 更新子弹资源文件及导入配置

scripts/Contents/Bullets/SCBlock.gd

@@ -0,0 +1,28 @@
+extends BulletBase
+class_name SCBlockBullet
+
+var speedV2 = Vector2.ZERO
+
+func register():
+	speedV2 = Vector2(
+		(launcher.currentFocusedBoss.position - launcher.position)
+		.sign().x
+		* randf_range(-0.25, 1)
+		* 100,
+		-50
+	)
+func spawn():
+	var staticTexture = texture.get_node_or_null("static")
+	if staticTexture is Sprite2D:
+		var text = load("res://resources/bullets/scblock/%d.png" % randi_range(0, 8))
+		staticTexture.texture = text
+		var trail = staticTexture.get_node_or_null("trail")
+		if trail is GPUParticles2D:
+			trail.texture = text
+func ai():
+	rotation = speedV2.angle()
+	speed = speedV2.length()
+	PresetBulletAI.trace(self , position + Vector2.from_angle(deg_to_rad(90)), lifeTimePercent() / 15)
+	PresetBulletAI.forward(self , rotation)
+	speedV2 *= 0.95
+	speedV2 += Vector2(0, 1)