[mechanics] firing arcs

i would like to see the addition of firing arcs for turrets. At the moment its somewhat unrealistic on ships that turrets have a full 360 degree field of fire as on most ships portions of the ship itself would block the line of fire. i would like the ability on weapon slots in the ship file to specify a start and end degree for where the turret can fire.

0, 90 would mean that a turret could fire at any targets in the forward facing right quadrant of the ship
-45, 45 would give a 90 degree cone straight in front of the ship.

first number indicates the furthest the turret can rotate counterclockwise and the second number is the furthest the turret can rotate clockwise.

Just in case you didn’t see it, there was recently a bit of discussion on this here: viewtopic.php?f=25&t=5240