1. Dirs Rsa low-level library that provides config/cache/data paths, following the respective conventions on Linux, macOS and Windows
2. Directories Jvma tiny library that provides config/cache/data paths, following the respective conventions on Linux, macOS, BSD and Windows
3. Directories Rsa mid-level library that provides config/cache/data paths, following the respective conventions on Linux, macOS and Windows
4. dirs-sys-rssystem-level helper functions for the dirs and directories crates