* Support for pkg-config was added
* Shortened the CMakeLists.txt by more than 4000 lines
* Added macro for feature detection
* Configure stage is reporting missing libs as error now (they were reported as compile errors during the build before)
* Link the scummvm-detection lib (this was missing before)
* Added missing defines like DETECTION_STATIC and USE_SDL2
* Group impl and header files in src file list to shorten the cmake script
* Unified indention for generated script