Update 1.51c: Improvements and hotfix

- Addition: Bullets passing near the player create a suppression visual effect on the player's camera
- Improvement: Fire mode adjustment for the "V4 Benili" rifle
- Improvement: Recoil system
- Improvement: AI enemies take longer to shoot if their weapon was previously slung on their back
- Improvement: Operator maintains their firing stance when shooting with a bolt-action rifle and a laser while using night vision goggles
- Fix: Reticle selection error when the sight is mounted on a sniper scope
- Fix: Display error with ground markings on the aircraft carrier