Semi-automatic update. These checks were done:
- built on NixOS
- Warning: no binary found that responded to help or version flags. (This warning appears even if the package isn't expected to have binaries.)
- found 9.96.1 with grep in /nix/store/ha2fl2l2j3p9lcn6scxn1n50f1vsb5k6-easyloggingpp-9.96.1
- found 9.96.1 in filename of file in /nix/store/ha2fl2l2j3p9lcn6scxn1n50f1vsb5k6-easyloggingpp-9.96.1
Added a pkg-config file and copied the relevant source file into the
nix store. The idea is that the user may now relatively easily include
the library’s source file in their project using common CMake features.
