solve error

cmd/rpc/third/main.go

@@ -1 +1,16 @@
-package third
+package main
+
+import (
+	"OpenIM/internal/rpc/third"
+	"OpenIM/internal/startrpc"
+	"OpenIM/pkg/common/config"
+)
+
+func main() {
+	if err := config.InitConfig(); err != nil {
+		panic(err.Error())
+	}
+	if err := startrpc.Start(config.Config.RpcPort.OpenImUserPort[0], config.Config.RpcRegisterName.OpenImUserName, config.Config.Prometheus.UserPrometheusPort[0], third.Start); err != nil {
+		panic(err.Error())
+	}
+}