Changes the following warnings to errors:
C4701: potential use of uninitialized local variable
C4703: potential use of uninitialized local pointer
C4456: declaration hides previous local declaration
C4003: not enough arguments for function-like macro invocation
C4840: use of non-trivial class as an argument to a variadic function
C4805: unsafe mix of bool and int in a numeric operation or comparison
C4305: truncation of double to float or int to bool
C4366: address taken of unaligned field and used as an aligned pointer
C4315: object constructed into an unaligned field with a constructor that expects it to be aligned
* 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
