Add prune command

[UncleGedd]

Is your feature request related to a problem? Please describe

In accordance with our state design doc, add a uds prune command to remove unreferenced packages

Describe the solution you'd like

• Given unreferenced packages exist in bundle state
• When uds prune is ran
• Then unreferenced packages are removed

Additional Reqs

• Add a --confirm flag, if the user doesn't set it, then prompt
• The arg to uds prune should be a uds-bundle.yaml, a local bundle ref, or a remote bundle ref
• If no arg provided, look through all uds-bundle-<name> state secrets in the cluster (be sure to update prompt to support this)

[decleaver]

would be nice to list packages being pruned before hand?

[UncleGedd]

would be nice to list packages being pruned before hand?

For sure, I tried to capture that on the first additional req. We should def have a prompt that shows the packages to be pruned

[MxNxPx]

would be nice to list packages being pruned before hand?

For sure, I tried to capture that on the first additional req. We should def have a prompt that shows the packages to be pruned

i like @decleaver 's idea to get a list of what would get pruned. thinking of possible uses to extend things with something like a --dry-run flag. i envision being useful to do something like uds deploy *.zst --prune --dry-run and getting some form of output that displays what current versions of packages are getting updated to some new versions along with packages that would be pruned. if it makes more sense, i could create a separate github issue.