Refactor: script auto load geosite as a rule provider

constant/rule_extra.go

@@ -7,6 +7,8 @@ import (
 	"github.com/Dreamacro/clash/component/geodata/router"
 )
 
+const ScriptRuleGeoSiteTarget = "__WhateverTarget__"
+
 type RuleExtra struct {
 	Network      NetWork
 	SourceIPs    []*netip.Prefix