[Quest API] Add Native Database Querying Interface (#4531)

* Add database quest API

API functions are named to be similar to LuaSQL and perl DBI

New connections are made for Database objects. These can either use
credentials from the server eqemu_config or manual connections.

* Add option to use zone db connections

zone/lua_parser.cpp

@@ -42,6 +42,7 @@
 #include "lua_spawn.h"
 #include "lua_spell.h"
 #include "lua_stat_bonuses.h"
+#include "lua_database.h"
 
 const char *LuaEvents[_LargestEventID] = {
 	"event_say",
@@ -1318,7 +1319,8 @@ void LuaParser::MapFunctions(lua_State *L) {
 			lua_register_expedition(),
 			lua_register_expedition_lock_messages(),
 			lua_register_buff(),
-			lua_register_exp_source()
+			lua_register_exp_source(),
+			lua_register_database()
 		)];
 
 	} catch(std::exception &ex) {