[vcpkg_acquire_msys,vcpkg-ci-msys2] Ensure msys2 package list freshne…

…ss (microsoft#29067)

* [vcpkg-ci-msys2] New test port for msys2 freshness

* Add features for script updates

* Remove duplicate libbz2 entry

* Automatically update all msys packages, add autoconf-wrapper

* Update primary URL and mirrors

* Follow repo renames

* Fix dependencies of 'file'

* Resolve dependencies at runtime

Don't require msys2 packages to be order from dependent to independent.
This allows to directly use the packages official dependencies, even
if they contain cycles.
It also allows to maintain a stable alphabetical order of the package
declarations, even if the dependencies change over time. This helps to
avoid duplicate declaration.

* Fix updating

* [gettext] Preset more MSVC checks

* Update msys2 packages

* gettext fixes

* CI

* Simplify: Remove update-critical

Desired changes can be picked in git gui etc..

* PKGCONFIG moved

---------

Co-authored-by: Monica <[email protected]>
Co-authored-by: Billy Robert O'Neal III <[email protected]>