refactoring gun system structure.
Merge branch 'master' of https://github.com/1194451658/chromium-bsu-practice

Conflicts:
	template/chromium-bsu-practice/Classes/aircraft/EnemyAircraft0.cpp
	template/chromium-bsu-practice/Classes/aircraft/HeroAircraft.cpp
	template/chromium-bsu-practice/Classes/gun/Ammo.cpp
	template/chromium-bsu-practice/Classes/gun/Gun.cpp
	template/chromium-bsu-practice/Classes/gun/Gun.h
	template/chromium-bsu-practice/Classes/gun/HeroDefaultGun.cpp
	template/chromium-bsu-practice/Classes/gun/HeroDefaultGun.h
	template/chromium-bsu-practice/Classes/gun/shotMethod/LateralShotMethod.cpp
	template/chromium-bsu-practice/Classes/gun/shotMethod/LateralShotMethod.h
	template/chromium-bsu-practice/Classes/physics/PhysicsManager.h
	template/chromium-bsu-practice/proj.win32/HelloCpp.vcxproj
	template/chromium-bsu-practice/proj.win32/HelloCpp.vcxproj.filters