Fix ProjectileVisibleRanges

Fix projectile ownership bug?

Add HP bar for planes.
Decrease spitfire turning radius

Allow camera panning toggled with middle mouse (can be changed in keybind menu)

No longer need to zoom out as far to see what youre aiming at.

improve zooming

add sbpp_path = path

add offset_x and offset_y to weapon system

Improve and greatly optimize AI anti air.

improve firing angles on flak, shotgun, and minigun.
lengthen shotgun bullet duration.

Fix spitfire firing effect.
Fix a couple projectiles not targeted by AA.
Fix some HUD issues by forcing SetControlFrame(0) whenever the UI is touched.

When reload bank count is 10 or more, the ui will now use fractions instead of icons (7/11 for example).

Add modding api features:
sb_planes.angle_max (float, radians) limits angle of helicopters.
sb_planes.weapon1.delay (float, seconds) adds delay to weapon firing.
sb_planes.weapon1.delay_effect (string, effect path) spawns effect when weapon is scheduled to fire and has delay.