Add a setting to autostart race at a time

[zingo]

Really good when using it as a race helper instead of a "race" to setup in the lap-aid-area like ona 24h race and kick it of before going to start and not needing to "start" it at the start.

• autostart
• Set clock?
• autostop/save race after max time in time based races

[zingo]

Fixed by using testcase in 43377e2
keep this open to make it configarable and not hardcoded