log users

[sbinet]

fcs-lpc-app needs to be able to:

• log users (who's connected)
• display all connected users to all other users
• display who's ordering commands to other users
• provide a way for users to request to be elected "leader"
• display to users who's the "leader"

[sbinet]

possible inspiration: https://jacobmartins.com/2016/04/06/practical-golang-writing-a-simple-login-middleware/