CMakeLists.txt: Fix and rename ALL_WARNINGS option to WARN_MORE
CMakeLists.txt: Fix and rename ALL_WARNINGS option to WARN_MORE

Compile options must be added before add_executable, so we do that.
Also, ALL_WARNINGS doesn't really enable all warnings, just some more,
so rename it to WARN_MORE.

KururuLABO/NoLifeStory,anydream/NoLifeStory,elwl/NoLifeStory,anydream/NoLifeStory,NoLifeDev/NoLifeStory