[Quest API] Add Scripting Support to Mercenaries (#4500)

* [Quest API] Add Scripting Support to Mercenaries

* Cleanup

* Cleanup

* Update lua_merc.h

* Update mob.cpp

* XYZH

* Final

* Update attack.cpp

* Update attack.cpp

* Simplify event invocation

* Inline example

* Nullptr init example

* EVENT_TIMER simplify add EventPlayerNpcBotMerc

* EVENT_TIMER_START

* Remove has_start_event

* EVENT_TIMER_START with settimerMS

* EVENT_POPUP_RESPONSE

* Consolidation

* Update attack.cpp

* Push

* Update quest_parser_collection.h

* Comments

* Cleanup per comments

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Co-authored-by: Akkadius <akkadius1@gmail.com>

zone/lua_entity_list.cpp

@@ -16,6 +16,7 @@
 #include "lua_spawn.h"
 
 #include "lua_bot.h"
+#include "lua_merc.h"
 
 struct Lua_Mob_List {
 	std::vector<Lua_Mob> entries;