WAF参数定义增加优先级，可以让“轻”任务优先执行

internal/waf/checkpoints/checkpoint.go

@@ -6,6 +6,7 @@ import (
 )
 
 type Checkpoint struct {
+	priority int
 }
 
 func (this *Checkpoint) Init() {
@@ -36,6 +37,14 @@ func (this *Checkpoint) Stop() {
 
 }
 
+func (this *Checkpoint) SetPriority(priority int) {
+	this.priority = priority
+}
+
+func (this *Checkpoint) Priority() int {
+	return this.priority
+}
+
 func (this *Checkpoint) RequestBodyIsEmpty(req requests.Request) bool {
 	if req.WAFRaw().ContentLength == 0 {
 		return true