feat: run timer logic every tick to enable tick based timers

[roflmuffin]

Changes timer to run the frame calculation every frame rather than every 0.1s, so that per tick timers can be configured using the timer system.

Add a new AddTickTimer method which is a convenience method to create a timer with TickCount * Server.TickInterval as the delay/interval, since this is equivalent to a 15.625 ms tick timer