common/scripts: add script to generate distfiles from meson wrap files #58123
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useful for mesa (see #57292), where there are a signficant number of crates referenced via meson wrap files, but this could be generally useful for other meson-based packages that do a similar thing for vendored libraries.
This could be further extended in the future to add support for git/hg/svn wraps by adding subclasses of
Wrapthat support those metadata options.The intended workflow is for the script to generate a snippet that can be pasted into the template
setting
MESON_PACKAGE_CACHE_DIRallows meson to look for tarballs for wraps it needs automatically.Testing the changes