cmake: Include all source files

[german77]

GLOB_RECURSE doesn't reload the files when is built as a subproject. This causes compiler issues like the ones seen here https://ci.botw.link/#/builders/5/builds/127

For this reason I decided to include all files explicitly. Header files might need the same treatment but we will find out once I rebuilt the sead PR.

[MonsterDruide1]

For add_library and add_executable, it can cause CMake to generate certain IDE-integrated buildsystems like Visual Studio to display those header files in a perhaps more-desirable way, but to my knowledge, that's it. It doesn't have impact on whether the buildsystem itself functions properly or not with respect to doing builds.

https://stackoverflow.com/a/76109228/9275661

We probably want the "better support for buildsystems", so please add the headers to add_library as well.