alb a12

This update is aiming to expand the whole mid area, make it less "tight", more room for attacking team to breath

+Bigger capture zone (whole platform)
+All the grates are now solid
+Changed small ammo pack on mid to medium
+Removed climbable props to the roof on mid
+Cut some brushes, add some clipping to reduce Sniper sightlines
+Cut the bridge connected from lobby to mid, only the pipes left
+Raise skybox