cerbero/package: Use lbzip2 for tarballs when available

Also, always use `tar` on platforms other than Windows. The tar
shipped with MSYS is very old and slow, but it's quite performant on
other platforms.

Speeds up packaging on my machine from 7m30s to 2m3s. The speed up is
even more drastic on the GitLab runners: 2m21s to 3.7s.

Closes gstreamer/cerbero#132
9 jobs for parallel-compress-tarballs in 169 minutes and 53 seconds (queued for 18 seconds)
Status Job ID Name Coverage
  Preparation
passed #192664
manifest

00:00:55

 
  Build
passed #192666
cerbero deps android universal

02:22:34

passed #192665
cerbero deps fedora x86_64

00:53:58

passed #192667
cerbero deps windows x86

00:44:22

passed #192668
cerbero deps windows x86_64

00:50:41

 
  Full Builds
passed #192670
cerbero android universal

00:25:45

passed #192671
cerbero cross win32

00:12:24

passed #192672
cerbero cross win64

00:09:27

passed #192669
cerbero fedora x86_64

00:08:53