Do not wait for idle players

[peersky]

Currently round ends on timeout or when all players made their turn.

It's quite common for newcomers to drop off the game, hence we would like to modify current logic so that

• By default when game starts all players are flagged active
• If player did not made any activity previous round, he is flagged as idle
• Early turn ending is possible if all active members made their move.
• If player made a move and playerMove is called, player must be set back to active
• In LibQuadraticVoting function computeScoresByVPIndex should take in list of whether participant proposed or not (infer from is active or not). If is true, the Gives benefits to everyone but himself action must be bypassed.

Flag can be added to LibTurnBasedGame.sol -> struct GameInstance.

The check for early ending can be added to LibTurnBasedGame -> struct canEndTurnEarly

Write additional tests:

test/RankifyInstance.ts:

When first turn was made:

• Does not wait for a participant who did not made a move in previous turn

When second turn was made:

• Waits for participant who was idle and made a move in last finalised turn
• Idle participant did not give points during end turn score calculation
• Idle participant who became active gives a proper scores