Fixes, Variable countDown at start, commands at start, NoFail Map
Fixes
Added: TIMER_MAPSTART_START to be able to choose the start countdown
Added: COMMAND_EXECUTION_AT_START_RACEMODE and COMMAND_EXECUTION_AT_START_GRANDPRIX to be able to execute commands at start depending of the type of game -> training is considered as RaceMode
Added on each map: NO_FAIL -> If a player crashes, or tries to come back at previous checkpoint, it will restart its attempt