Cmake basic

[cheroy-ntia]

1. Add #pragma once for cross platform compiler
2. Update define DLLEXPORT for non windows compliler
3. Remove relative header file path in source code
4. Add Additional Include Directories in win32 project config
5. Add P528GTest google test project for win32.
6. Add P528GTest source code and header files in /test/src for cmake
7. Add generic test data csv in test/data
8. Add test data tables in /test/Data Tables
9. Add .gitmodules to clone google test and doxygen
10. Add cmake folder for all cmake configurations and cmake README

No changes on repository folder structure for now.