Proof-of-concept use of Ploutos to create RPM and DEB packages

[ximon18]

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For information about Ploutos see https://github.com/NLnetLabs/ploutos.

For an example successful run of the workflow contained in this PR see https://github.com/ximon18/sudo-rs/actions/runs/4375927878.

To do:

• The test-sudo-rs.sh test script should probably do something more interesting than just check that the binary is setuid.
• The copyright, description, license and maintainer settings should be reviewed.
• Man pages and other documentation that should be part of the packaged should be added, if desired.
• The set of targets packages are built for should be reviewed.

Note that the packages produced do not try to replace sudo as already installed. There are commented out settings in sudo/Cargo.toml that relate to doing this on DEB and RPM if wanted. Enabling those settings now will cause the automated packaging tests to fail as the packages cannot be installed then in the LXC containers as those containers already contain sudo and complain that one must first configure a password before removing sudo.

The commit history should be squashed. I left it as-is to illustrate the process I went through to get Ploutos to support Cargo workspaces and to configure Ploutos for this project.

Hope this helps,

Ximon

[squell]

Moved it to a neutral branch for now (i.e. the one it was forked from) to reduce the energy impact of our CI setup :-).

When we get to creating a first release (some time out still) I'm pretty sure we are going to use this to create a packages for Debian/Ubuntu/Fedora.

[squell]

Doing some summer clean up: the creation of .deb and .rpm packages it handled for us by downstream maintainers, so this PR is no longer necessary. But I'd like to keep these changes around somewhere so I'm putting them on the 'ploutos' branch for future reference :-)