Add pango.wrap file

It would be nice to get to the point where we can build pango on Windows using gst-build fallbacks out of the box. But we are not there yet...

• We need to either let Meson auto promote all transitive dependencies of pango (freetype2, harfbuzz, etc) with that Meson PR: https://github.com/mesonbuild/meson/pull/6968 OR we could add all wrap files directly into gst-build in addition to pango.wrap.
• Introspection needs to be disabled, but pango option is "boolean" instead of "feature" and is not yielding: https://gitlab.gnome.org/GNOME/pango/-/merge_requests/252 (blocked on GTK: https://gitlab.gnome.org/GNOME/gtk/-/merge_requests/2648).
• Freetype2 version provided by pango wrap file seems wrong: https://gitlab.gnome.org/GNOME/pango/-/merge_requests/248.
• pango does not fallback for cairo: https://gitlab.gnome.org/GNOME/pango/-/merge_requests/249.
• Update CI to build pango plugin. gst-ci!360 (merged).
• Since we don't depend on Meson >=0.55 and it's not available in the CI we can't use [provide] section yet, so we need gst-plugins-base!844 (merged).

Optional:

• If this one gets merged too, we can use dependency_names=pango,pangocairo in the [provide] section of pango.wrap: https://gitlab.gnome.org/GNOME/pango/-/merge_requests/250.