DCS event mark added

Event:	S_EVENT_MARK ADDED		Added with: 2.5.1
Enum ID:	25		Event Locality: None
Description:	Occurs when mark panels or markup shapes get added to the mission by players or scripting functions.
Table Format:	The mark add event table is in the following format. Event = { id = 25, idx = idxMark(IDMark), time = Time, initiator = Unit, coalition = -1 (or RED/BLUE), groupID = -1 (or ID), text = markText, pos = vec3 }
Examples:
Notes:	ID moved from 24 to 25 sometime during patch 2.5.5.
Events:	shot, hit, takeoff, land, crash, ejection, refueling, dead, pilot_dead, base_captured, mission_start, mission_end, took_control, refueling_stop, birth, human_failure, detailed_failure, engine_startup, engine_shutdown, player_enter_unit, player_leave_unit, player_comment, shooting_start, shooting_end, mark_added, mark_change, mark_remove, kill, score, unit_lost, landing_after_ejection, discard_chair_after_ejection, weapon_add, landing_quality_mark, ai_abort_mission, weapon_drop, runway_takeoff, runway_touch,