cmake NANOEM_WIN32_HAS_OPENGL examples

hkrn/nanoem sapp/CMakeLists.txt :20 

target_compile_definitions(${NANOEM_EXECUTABLE_NAME} PRIVATE NANOEM_WIN32_HAS_OPENGL)

hkrn/nanoem win32/CMakeLists.txt :24 

target_compile_definitions(${NANOEM_EXECUTABLE_NAME} PRIVATE NANOEM_WIN32_HAS_OPENGL)