This PR implements
https://www.figma.com/file/pLq7dvhx2mFeWFOedXpUQ5/Project-%E2%80%93-Collaboration-UI?type=design&node-id=666%3A8610&t=XFGk6KEtTCFXBvCQ-1

Release notes:
- [x] Redesigned collaboration UI
- [x] Added voice support