The cpputilities::Logger<> class provide basic facilities for supporting
logging operations. It comes with a cpputilities::SinkStdout class for
allowing logging on the standard output.

The cpputilities::Chronometer<> class provide basic facilities for
performing in-source time measurements. The commit also include the
skeleton for configuring library targets, tests and documentation
generation.

Add an empty README.md and a .gitignore file suitable for any C/C++
project developed with CLion.