PvP timer

[SleepyG11]

Added layer "pvp_timer", which activates timer during pvp.

• You can timer your opponent when you have higher score than opponent
• Base time is 90 seconds + 15 seconds per each hand played - animations
• When time runs out, you lost a life and pvp ends for both players
• In this case, loser's Ice Cream and Seltzer's uses will be deducted according to amount of not played hands.