pango: add v1.54.0, enable libxft, freetype and fontconfig by default, add introspection support

[valgur]

Summary

Changes to recipe: pango/[*]

Motivation

Related to the GTK PR #25090.

• v1.54.0 is required by the latest GTK 4.x release.
• The pangoxft component is required by the GTK X11 backend.
• Freetype and fontconfig are already enabled by default in Cairo, which Pango depends on, so disabling them does not have much benefit.
• Pango introspection info is required to build the GTK introspection info in GTK 4.x.

Details

Closes #22970 - merged the changes from it.

---

• Read the contributing guidelines
• Checked that this PR is not a duplicate: list of PRs by recipe
• Tested locally with at least one configuration using a recent version of Conan

[AbrilRBS]

@valgur we have made some changes to the recipe based on the latest meson.build. I'm actually not quite sure if all of them represent the old versions too, we'll need to check, but feel free to take a look at the changes, let me know what you think!

The only issue I was not able to track down is that if I call conan create . --version=1.54.0 -b=missing -o="&:with_freetype=False" , I still get Run-time dependency freetype2 found: YES 26.1.20 in the meson output, which is suprising to me, but maybe you have a clearer idea of what's going on?

[valgur]

Thank you so much @AbrilRBS for investing the tangled mess of Freetype and FontConfig options in this project! The changes look good to me.
I only converted the meson.build references to full URLs, since that also includes the version of the file it is referring to, which is difficult to figure out at a later date.

[conan-center-bot]

Conan v1 pipeline ✔️

All green in build 10 (3bfc3eb2531861a2d6e06a7ec4205942ba98316c):

• pango/1.50.14:
  Built 9 packages out of 22 (All logs)

• pango/1.54.0:
  Built 9 packages out of 22 (All logs)

• pango/1.51.0:
  Built 9 packages out of 22 (All logs)

• pango/1.50.7:
  Built 9 packages out of 22 (All logs)

• pango/1.49.3:
  Built 9 packages out of 22 (All logs)

• pango/1.50.10:
  Built 9 packages out of 22 (All logs)

• pango/1.48.9:
  Built 9 packages out of 22 (All logs)

• pango/1.50.8:
  Built 9 packages out of 22 (All logs)