重新整理物联网服务，分离业务逻辑。

iot/EdgeAgent/updater/main_windows.go

@@ -0,0 +1,29 @@
+//go:build windows
+// +build windows
+
+package main
+
+import (
+	"os"
+	"os/exec"
+	"syscall"
+)
+
+type mainProgramStarter struct{}
+
+func (s *mainProgramStarter) GetMainName() string {
+	return "main.exe"
+}
+
+func (s *mainProgramStarter) Start(targetExe string) error {
+	cmd := exec.Command(targetExe)
+	cmd.Stdout = os.Stdout
+	cmd.Stderr = os.Stderr
+
+	// Windows：新进程组，脱离 Ctrl+C / 父进程
+	cmd.SysProcAttr = &syscall.SysProcAttr{
+		CreationFlags: syscall.CREATE_NEW_PROCESS_GROUP,
+	}
+
+	return cmd.Start()
+}