Add preference to add glow outline to boss

[FortyTwoFortyTwo]

If preference is enabled (default), bosses and minion would have white glow outline to easily see where boss is while millions of teammates block view. Outline won't be shown if boss is behind the wall or solid brushes. White outline should also not be shown if sniper rifle's global team outline is shown, to easily indicate boss's glow can be seen anywhere rather than visible areas