[Quest API] Add Entity Variable Events to Perl/Lua (#4092)

* [Quest API] Add Entity Variable Events to Perl/Lua

- Add `EVENT_ENTITY_VARIABLE_DELETE`.
- Add `EVENT_ENTITY_VARIABLE_SET`.
- Add `EVENT_ENTITY_VARIABLE_UPDATE`.
- All export `$variable_name` and `$variable_value`.

- Add `event_entity_variable_delete`.
- Add `event_entity_variable_set`.
- Add `event_entity_variable_update`.
- All export `e.variable_name` and `e.variable_value`.

- Allows operators to perform operations when entity variables are cleared, deleted, set, or updated.

* Update mob.cpp

* Cleanup.

* Cleanup

* Update mob.cpp

* Update lua_general.cpp

* Update embparser_api.cpp

zone/lua_parser_events.h

@@ -240,6 +240,16 @@ void handle_npc_timer_stop(
 	std::vector<std::any> *extra_pointers
 );
 
+void handle_npc_entity_variable(
+	QuestInterface *parse,
+	lua_State* L,
+	NPC* npc,
+	Mob *init,
+	std::string data,
+	uint32 extra_data,
+	std::vector<std::any> *extra_pointers
+);
+
 // Player
 void handle_player_say(
 	QuestInterface *parse,
@@ -808,6 +818,15 @@ void handle_player_timer_stop(
 	std::vector<std::any> *extra_pointers
 );
 
+void handle_player_entity_variable(
+	QuestInterface *parse,
+	lua_State* L,
+	Client* client,
+	std::string data,
+	uint32 extra_data,
+	std::vector<std::any> *extra_pointers
+);
+
 // Item
 void handle_item_click(
 	QuestInterface *parse,
@@ -1192,5 +1211,15 @@ void handle_bot_timer_stop(
 	std::vector<std::any> *extra_pointers
 );
 
+void handle_bot_entity_variable(
+	QuestInterface *parse,
+	lua_State* L,
+	Bot* bot,
+	Mob* init,
+	std::string data,
+	uint32 extra_data,
+	std::vector<std::any> *extra_pointers
+);
+
 #endif
 #endif