CMake: add EM_ON EM_OFF and rename BUILD_* and WITH_* options to
RAGEPHOTO_*
Doc: change C++ API to C/C++ API
README: change build libragephoto section and add the reworked CMake
options
RagePhoto-Extract: removed unnecessary includes
Windows RagePhoto-Extract: included Windows resource file
RagePhotoA: include iostream to fix undefined std::
RagePhoto: seperate C and CXX exports to export only C functions with
WebAssembly
Windows RagePhoto: changed Windows resource file language to 0x0
Doxyfile: change PROJECT_VERSION variable to ragephoto_VERSION variable