Integrate Dropdown component into the Morpher

[alex-vladut]

Consider integrating the Dropdown component into the morpher and maybe rename it to Select so that it is more in line with the behaviour provided. The following resources could serve as guidance for how to handle the underlying logic:

• https://react-spectrum.adobe.com/react-aria/useSelect.html
• https://github.com/reach/reach-ui/blob/develop/packages/dropdown/src/index.tsx