Draft: feat(PHP): Add packages dump file with more metadata

This is a very experimental API without any guarantees.

Already deployed: https://aur.archlinux.org/packages-meta-v1.json.gz

Context:

• https://gitlab.manjaro.org/applications/pamac/-/issues/1017
• https://gitlab.manjaro.org/applications/pamac/-/issues/1135
• https://forum.manjaro.org/t/responsible-use-of-aur/86392