feat: 支持设置worker访问请求中的图片地址

constant/system.go

@@ -0,0 +1,9 @@
+package constant
+
+var ServerAddress = "http://localhost:3000"
+var WorkerUrl = ""
+var WorkerValidKey = ""
+
+func EnableWorker() bool {
+	return WorkerUrl != ""
+}