I can add some controls directly to my project by right-clicking my project in Solution Explorer, Add New Item... I see templates for several controls, like Button, Button Palette, ComboBox, etc. But I do not see several controls, such as CheckBox, EditBox, Spinner, etc. Why do some controls not have templates? I can add a Spinner manually to the Config.daml and create a class module by hand and it works, but can't add it as a "new item".