refactor: split ServiceCommand methods into dedicated files

- Move ServiceCommand.Start to commands_service_start.go
- Move ServiceCommand.Stop to commands_service_stop.go
- Move ServiceCommand.Restart to commands_service_restart.go
- Move ServiceCommand.Reload to commands_service_reload.go
- Move ServiceCommand.Status to commands_service_status.go
- Move ServiceCommand.Uninstall to commands_service_uninstall.go
- Move createStartCommands to commands_service_start.go
- Clean up imports in commands_service.go
- Remove all method implementations from main service file

This refactoring improves code organization by:
- Separating concerns into focused files
- Making navigation easier for developers
- Reducing merge conflicts between different commands
- Following consistent modular patterns
- Reducing commands_service.go from ~650 lines to ~50 lines

Each method is now co-located with its related functionality,
making the codebase more maintainable and easier to understand.

cmd/cli/commands_service_status.go

@@ -0,0 +1,29 @@
+package cli
+
+import (
+	"os"
+
+	"github.com/kardianos/service"
+	"github.com/spf13/cobra"
+)
+
+// Status implements the logic from cmdStatus.Run
+func (sc *ServiceCommand) Status(cmd *cobra.Command, args []string) error {
+	status, err := sc.serviceManager.svc.Status()
+	if err != nil {
+		mainLog.Load().Error().Msg(err.Error())
+		os.Exit(1)
+	}
+	switch status {
+	case service.StatusUnknown:
+		mainLog.Load().Notice().Msg("Unknown status")
+		os.Exit(2)
+	case service.StatusRunning:
+		mainLog.Load().Notice().Msg("Service is running")
+		os.Exit(0)
+	case service.StatusStopped:
+		mainLog.Load().Notice().Msg("Service is stopped")
+		os.Exit(1)
+	}
+	return nil
+}