CI: add meson build jobs for Fedora and MSYS2

4 jobs for gtk3-meson-ci in 15 minutes and 11 seconds (queued for 1 second)
latest
Status Job ID Name Coverage
  Build
passed #254194
fedora-autotools

00:13:44

passed #254195
fedora-meson

00:08:48

manual #254197
win32 allowed to fail manual
msys2-mingw32-autotools
passed #254196
win32
msys2-mingw32-meson

00:15:10