Added confirm button

src/main.go

@@ -23,6 +23,10 @@ func main () {
 	deviceSelectorWindow.SetContent(container.NewVBox(
 		widget.NewLabel("Please Select Serial Port"),
 		portSelector,
+		widget.NewButton("Confirm Select Device", func(){
+			// Will be a package UI function to confirm device is ok
+			fmt.Println("Device Confirmed")
+		}),
 	))
 	deviceSelectorWindow.ShowAndRun()
 }