core 目录参考

core 的目录依赖关系图

文件
	application.h
	engine.cpp
	engine.h
	enginescope.h
	Engine scope for managing the engine instance
	entry.cpp
	The definition of entry point
	entry.h
	The declaration of entry point
	imgui.cpp
	layout.h
	systemmanager.cpp
	class source for start and stop system
	systemmanager.h
	class header for start and stop system
	Tutorial.cpp
	Uniform.h