docs: Add bzip2 to the Users page

docs/markdown/Users.md

@@ -13,6 +13,7 @@ listed in the [`meson` GitHub topic](https://github.com/topics/meson).
  - [Arduino sample project](https://github.com/jpakkane/mesonarduino)
  - [bolt](https://gitlab.freedesktop.org/bolt/bolt), userspace daemon to enable security levels for Thunderbolt™ 3 on Linux
  - [Budgie Desktop](https://github.com/budgie-desktop/budgie-desktop), a desktop environment built on GNOME technologies
+ - [Bzip2](https://gitlab.com/federicomenaquintero/bzip2), the bzip2 compressor/decompressor
  - [Cage](https://github.com/Hjdskes/cage), a Wayland kiosk
  - [casync](https://github.com/systemd/casync), Content-Addressable Data Synchronization Tool
  - [cinnamon-desktop](https://github.com/linuxmint/cinnamon-desktop), the cinnamon desktop library