WAF参数定义增加优先级，可以让“轻”任务优先执行

internal/waf/checkpoints/checkpoint_interface.go

@@ -33,4 +33,10 @@ type CheckpointInterface interface {
 
 	// Stop stop
 	Stop()
+
+	// SetPriority set priority
+	SetPriority(priority int)
+
+	// get priority
+	Priority() int
 }