Brew MP 1.0.2
This function starts the transition manager. It will set the transition
manager to active mode and initialize the timer.
If the manager is already running, this call will have no effect.
Starting a manager will reset its start time.
An active manager that receives an event from an outside source, be it
another manager or an application, will revert to passive mode.
A manager in active mode cannot have KEEP_TRANSITIONS on.
AEEResult ITransitionMgr_Start(ITransitionMgr* pif)
AEE_SUCCESS : The manager has been set to active mode.
AEE_EFAILED : The manager failed to start