We want to ensure that sidekick will work with the new librarian CLI design. Since the librarian CLI is still under active development / stabilization, use the sideflip command for this experiment.

Things to implement:

• caching via LIBRARIAN_CACHE
• librarian generate
• librarian generate --all
• librarian generate for compute (with discovery-artifact-manager)
• GH action for running tests that require Rust tools (taplo / cargo / etc.)
• librarian release [library] [--all]
• librarian release --execute
• librarian publish [library] [--all]
• implement full bump_versions workflow
• support for non-generated libraries (storage, pubsub, etc.)