[added] version file for setting the version stamp on build exe
[added] angelscript framework
[added] engine base application implementation
[added] engine base game clock implementation
[added] opengl / glfw
[added] tiny xml
[added] logger and test xml file for setting
[added] engine ogl renderer
[added] engine ogl window
[added] engine windows message handling
[added] non thread safe event manager and event base class
[added] singleton template
[added] unification space base class overriding the suitable virtual methods