Merge topic 'doc-cpack-nuget' into release-3.30

dbdca56555 Help: CPack/NuGet avoid deprecated variables in the usage example
d06a39dd59 Help: CPack/NuGet add `:Supported:` to some variables
a6a8212ba2 Help: CPack/NuGet add description to the added variables
039bf0f3f3 Help: CPack/NuGet fix `versionadded` position
391e339926 Help: CPack/NuGet add deprecation notes according to the current spec
4e11de312b Help: Reorder variables as they mentioned in the official spec

Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !9605