project: added project skeleton

Skeleton includes emtpy implementations of application class structure.
Source groups were added to CMakeLists to define filters in Visual Studio.

cmake/create_source_groups.cmake

@@ -0,0 +1,13 @@
+macro(create_source_groups)
+    foreach(FILE ${ARGN}) 
+		get_filename_component(PARENT_DIR "${FILE}" PATH)
+		# skip src or include and changes /'s to \\'s
+		string(REGEX REPLACE "(\\./)?(src|include)/?" "" GROUP "${PARENT_DIR}")
+		string(REPLACE "/" "\\" GROUP "${GROUP}")
+		
+		string(LENGTH "${GROUP}" GROUP_NAME_LENGTH)
+		if (${GROUP_NAME_LENGTH} GREATER 0)
+			source_group("${GROUP}" FILES "${FILE}")
+		endif()
+	endforeach()
+endmacro()