this removes submodules and external libraries in the code in favor of
importing them as CPM packages. CPM_SOURCE_CACHE is recommended as
codegen has to readd two of the same dependencies
- loader checks if resources are correct at startup, if not, downloads them and replaces
- add sha256 to hash
- change hash to use paths instead of strings
- cmake rework; GeodeFile.cmake now checks CLI version
- add optional `DONT_INSTALL` argument to `create_geode_file`
- test mods are now not installed by default
- add package_geode_resources_now command for packaging resources at configure time and creating a header with their calculated hashes
