Add FindGlog.cmake module

[jvegh]

I am routine using glog for logging in my projects. Could you please support it with "--use"?

[schuhschuh]

Could you please support it with "--use"?

This requires the addition of a FindGLog.cmake module because CMake itself does not come with such module yet. There are some example modules available that were written by others for their projects.

• https://sourceforge.net/p/gnss-sdr/cttc/ci/53b227a0c1663b0ad0e79f54534313234956945a/tree/cmake/Modules/FindGLOG.cmake
• https://github.com/hanjianwei/cmake-modules/blob/36667180b943770409ad15bb1140ee9186b08f18/FindGlog.cmake
• https://ceres-solver.googlesource.com/ceres-solver/+/78cc2c4719a68fea2597fce6346cb79443536367/cmake/FindGlog.cmake

Otherwise, we can look into the option of including the source code directly in the BASIS project.

[schuhschuh]

Until this is resolved, you could just copy one of the linked FindGlog modules into the config/ directory of your project.