Detect changes to pkg-config files and reconfigure

Possible to create a command that make meson reload settings from pkg-config?
It's good for when you need to edit the package, and the only way to reload pkg-config it's to rebuild all.

The issue concerns Meson reconfiguration after editing pkg-config files, but it names no files, tests, or entry points. First trace how Meson currently reloads settings and rebuilds; done means providing a command that detects or reloads pkg-config changes without rebuilding everything.

Written by the indexing model from the issue text.