feat: support sub-rule, eg.

rules:
  - SUB-RULE,(AND,((NETWORK,TCP),(DOMAIN-KEYWORD,google))),TEST2
  - SUB-RULE,(GEOIP,!CN),TEST1
  - MATCH,DIRECT

sub-rules:
  TEST2:
    - MATCH,Proxy
  TEST1:
    - RULE-SET,Local,DIRECT,no-resolve
    - GEOSITE,CN,Domestic
    - GEOIP,CN,Domestic
    - MATCH,Proxy

rules/common/base.go

@@ -5,7 +5,7 @@ import (
 )
 
 var (
-	errPayload = errors.New("payload error")
+	errPayload = errors.New("payloadRule error")
 	initFlag   bool
 	noResolve  = "no-resolve"
 )