[m2458] EventAI - Ingame output of script state

With this the command .npc aiinfo will give more output about the current state.
Remark that this output is only given if the LogFilter for EventAIDev mode is disabled

Based on cmangos/mangos-wotlk@1b791bcd23

Signed-off-by: Daniel S. Reichenbach <daniel@kogitoapp.com>