hotfix - fixed rapid fire can't overwrite usmc m16a4's close automatic fire

hotfix - fixed rapid fire can't overwrite fireteam leader m16a4/m203's close automatic fire

Small update
- Now Engineer's donut breach charge don't require BH
- SMAW Gunner will be changed to Assaultman. but you can still use SMAW as before. Assaultman can use breach charge or tools to door breach or break walls. But you have to give up SMAW to use them.

Small update
- added Sneak movement animation for Army rifles Forward observer
- Forward observer's adjusting fire avaliable request time is decreased (3 -> 2)
- Force Recon's AV-8B Straifing run is now requested by rangefinder, not a red smoke grenade. and arrival time is increased (20s -> 25s)
- Kill range of AV-8B Straifing run and AH-1Z Straifing run are increased (each +1m). and AV-8B will burst more shells.

hotfix - fixed AT-specialist's AT-4 desc missing

Small add and fix
- PVS-17B and PVS-17C NVG Scopes are added for USMC Rifles and Force Recon.
- Fixed USMC Rifles M240 gunner's wrong default optic

Hotfix : Fixed Sunglasses error pop-up when wear beanie