meson: Port to 4.4

Fixes #24
9 jobs for meson-4.4 in 6 minutes and 35 seconds (queued for 5 seconds)
Status Name Job ID Coverage
  Build
passed macOS #13487031
gst-macos-10.15

00:03:34

manual msys2 #13487030
docker windows 1809 allowed to fail manual
passed no external deps #13487023

00:03:22

passed no external x86 #13487024

00:03:28

passed vs2017 #13487028
docker windows 1809

00:03:12

passed vs2017 x86 #13487029
docker windows 1809

00:03:19

passed with deps #13487025

00:06:22

passed with deps x86 #13487027

00:06:15

passed with deps yasm #13487026

00:06:34