cairomm: relocatable shared lib on macOS

[SpaceIm]

cairomm is built with Meson, so fix_apple_shared_install_name() must be called after packaging.

---

• I've read the contributing guidelines.
• I've used a recent Conan client version close to the currently deployed.
• I've tried at least one configuration locally with the conan-center hook activated.

[ghost]

I detected other pull requests that are modifying cairomm/all recipe:

• cairomm v2 toolchain #15713

This message is automatically generated by https://github.com/ericLemanissier/conan-center-conflicting-prs so don't hesitate to report issues/improvements there.

[conan-center-bot]

Conan v1 pipeline ✔️

All green in build 2 (ed6ae2978caf965411234f562a17352a5142bdb8):

• cairomm/1.16.2:
  All packages built successfully! (All logs)

• cairomm/1.18.0:
  All packages built successfully! (All logs)

• cairomm/1.17.1:
  All packages built successfully! (All logs)

• cairomm/1.14.5:
  All packages built successfully! (All logs)

---

Conan v2 pipeline ✔️

Note: Conan v2 builds are now mandatory. Please read our discussion about it.

All green in build 2 (ed6ae2978caf965411234f562a17352a5142bdb8):

• cairomm/1.17.1:
  All packages built successfully! (All logs)

• cairomm/1.16.2:
  All packages built successfully! (All logs)

• cairomm/1.18.0:
  All packages built successfully! (All logs)

• cairomm/1.14.5:
  All packages built successfully! (All logs)