Reduce phases & Taking seats mechanism

[mit3r]

Some phases can be reduced to one - Lobby. In lobby players should choose their persona, seat and report readiness. Then game can starts.

• Reduce game phases
• Backend: Seats mechanism
• Frontend: Seats mechanism

It can be done on one branch.

First player which joins the room has seat = 0. Then rest of the players must choose their seat. Free seat has assigned id of player from seats array for example:

const playerSeats = ["Adam", "Bartek", "Celina", "Damian", "Ewa"]
// Adam has seat number 0, Bartek 1 and so on
// When we choose seat between Adam & Bartek we recive Bartek's seat number.
// We send it to backend and at backend we increase every seat higher or equal than reviced seat number
// When players disconnects seats must be decreased