-Used player_connect_full event to properly check for MGs

-Fixed bots only going behind the host, should work for other human players now
-Fixed null instance error when a player disconnects while using a machine gun
-Slightly increased distance that bots go behind the machine gunner

-Fixed error message complaining about info_director not existing on restart
-Used seemingly better method to perform functions on gameplay start

-Changed "bot-behind" tolerance

-Removed script from global scope to prevent potential conflicts
-Slight rewrite, now compatible with Left 4 Bots 2
-Script is now only executed if there are any mounted machine guns in the first place
-Added addoninfo.txt

-Added an extra check to avoid assigning variables unnecessarily