[feature] separate subscription service

Co-Authored-By: Alireza Ahmadi <alireza7@gmail.com>

web/global/global.go

@@ -8,12 +8,17 @@ import (
 )
 
 var webServer WebServer
+var subServer SubServer
 
 type WebServer interface {
 	GetCron() *cron.Cron
 	GetCtx() context.Context
 }
 
+type SubServer interface {
+	GetCtx() context.Context
+}
+
 func SetWebServer(s WebServer) {
 	webServer = s
 }
@@ -21,3 +26,11 @@ func SetWebServer(s WebServer) {
 func GetWebServer() WebServer {
 	return webServer
 }
+
+func SetSubServer(s SubServer) {
+	subServer = s
+}
+
+func GetSubServer() SubServer {
+	return subServer
+}