feat: framed fm for webshell (#411)

* feat: framed fm for webshell

* 1MB buffer

model/monitor.go

@@ -23,6 +23,7 @@ const (
 	TaskTypeTerminalGRPC
 	TaskTypeNAT
 	TaskTypeReportHostInfo
+	TaskTypeFM
 )
 
 type TerminalTask struct {
@@ -34,6 +35,10 @@ type TaskNAT struct {
 	Host     string
 }
 
+type TaskFM struct {
+	StreamID string
+}
+
 const (
 	MonitorCoverAll = iota
 	MonitorCoverIgnoreAll