CPack/DEB: Add zstd compression for deb packages
Ubuntu 21.04 is switching to zstd by default, meaning that they consider it stable enough for widespread use.
Considering that it's an easy change for CMake, seems like a reasonable addition
Ubuntu 21.04 is switching to zstd by default, meaning that they consider it stable enough for widespread use.
Considering that it's an easy change for CMake, seems like a reasonable addition