feat(eng-14008): add cloudsmith repos privileges command group

CHANGELOG.md

@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ## [Unreleased]
 
+### Added
+
+- Added `cloudsmith repos privileges` for managing explicit repository access from the terminal. `list` shows the teams, users and service accounts that were granted access explicitly; `set` grants access to any number of them and leaves everyone else untouched, asking first if it would lower access someone already has; `revoke` takes access away from the ones named, skipping any that had none; and `replace` makes a JSON file (or stdin) the complete truth for the repository. `revoke` and `replace` ask for confirmation first unless `-y` is passed.
+
 ### Changed
 
 - `cloudsmith copy` now prints `Copied: owner/repo/slug (slug_perm)` after a successful copy and includes `slug_perm` in `-F json` output, matching `push`.