The CMake default is to enable both C and CXX,
which leads to build failure if C++ compiler
is not present in the build environment.

Explicitly stating that we don't need C++
allows distributions that build their packages
in controlled environment to get rid of extra
g++ build dependency.

Different distributions have different standards about it,
so let's add an option for that.

Also cleanup of some main.c functions

Outsource some functions of main.c to hid_utility.c

Also change description and long option of -c

* Now provides full Windows support
  However for serveral headsets IDs for that have to be added
* Main-function simplified even more and duplicate code rewritten
* Capabilities can now be properly enumerated in code