feat: Websockets server: Jonas

[JonasCodeworks]

• [x] set up socket.io in its own file
• [x] set up routes for creating and accessing a share
• [ ] set up model for routes
• [ ] connect sharer to room after creating a share
• [ ] connect receiver to room after accessing share
• [ ] send live location from journey page
• [ ] receive live location on share page
• [ ] add travel time to user profile before destroying share
• [ ] messaging