Install yaml tools file to gz

[chapulina]

• Part of ign to gz : Remaining Files, and Python Libraries/Namespaces gazebo-tooling/release-tools#765
• Changed since ign -> gz Migrate Internal CMake Vars : gz-cmake gz-cmake#277

The debbuilds are currently yellow because of this:

[codecov]

Codecov Report

Merging #92 (d1cc5b3) into main (cc8233f) will not change coverage.
The diff coverage is n/a.

❗ Current head d1cc5b3 differs from pull request most recent head c4727fb. Consider uploading reports for the commit c4727fb to get more accurate results

@@           Coverage Diff           @@
##             main      #92   +/-   ##
=======================================
  Coverage   99.35%   99.35%           
=======================================
  Files          17       17           
  Lines         617      617           
=======================================
  Hits          613      613           
  Misses          4        4           

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