1.95 - Mini patch before VR

This patch introduces some new feature and QoL improvements right before I start making the VR mode.

- Added Artillery units.

Artillery units can provide fire support at your desired area, using your COMM panel.

There are 'Point fire support' and 'Area fire support'.

Point fire support activates only 1 artillery unit to pinpoint the designated point, and Area fire support activates 6 artillery units to cover 250 meters around the designated point.

There will be some cases where fire support is not available, when the designated point is outside the range of artillery or every artillery units are busy.

- Added Fire support data in Data page, providing available Artillery units and expected time of arrival based on the designated point.

Cockpit Interaction Improvements :
- The mouse cursor no longer moves around when you are interacting with switches.

- Added cursor movements sensitivity slider.

- Added 'Slide action for all switch interactions' : Instead of pressing left or right mouse button to control toggle switches and knobs, holding the mouse button and sliding mouse to desired direction moves the switch.

- Added 3D cockpit interaction cursor.

Trying to click switches with TrackIR can be annoying due to constantly jittering camera, and it would be simply unusable in VR. This option provides the alternative cursor that exists in the 3D space to  solve this problems.

- Fixed TrackIR crash issue when leaving the game while TrackIR is activated.

- Increased the resolution of keybinds menu.

- Added 'Invert Y Axis' and 'X axis as pedal' option for mouse cyclic.

- mouse cyclic sensitivity no longer affects camera rotation sensitivity.

- Added Quick zoom multiplier slider.

- AI helicopters now can react to ATGMs launched by the player, performing evasive maneuver against player's missile.

- Updated Trainings to include the use of artillery fire support.

- Fixed various bugs and errors I have found.

Now I'll start working on VR mode !