meson: Build pango if compiler can detect all dependencies on Windows

meson fallback for libpango on Windows is almost unavailable
since some libpango's dependencies (especially cairo) are not
meson ported yet. But we could build pango plugin if the required
libraries and headers are installed on system.
16 jobs for manual-pango-dep-win in 57 minutes and 52 seconds (queued for 12 seconds)
latest
Status Job ID Name Coverage
  Preparation
passed #253628
gst indent

00:00:21

passed #253627
manifest

00:00:43

 
  Build
passed #253629
build fedora x86_64

00:09:54

passed #253630
build nodebug fedora x86_64

00:06:54

 
  Test
passed #253631
check fedora

00:04:24

passed #253632
integration testsuites fedora

00:14:21

 
  Full Builds
passed #253634
build cerbero android universal

00:14:12

passed #253635
build cerbero cross win32

00:06:04

passed #253636
build cerbero cross win64

00:07:27

passed #253633
build cerbero fedora x86_64

00:08:31

 
  Full Tests
passed #253640
valgrind bad

00:04:59

passed #253637
valgrind base

00:11:25

passed #253641
valgrind ges

00:07:53

passed #253638
valgrind good

00:12:07

passed #253639
valgrind ugly

00:02:42

 
  Apps
passed #253642
android universal examples

00:06:32