Implement client dev tools

[theory]

Based on the design work completed in #6, implement the CLI for developer tooling. Should support these capabilities, some of which should already have been developed for the

• [ ] Initialize projects
• [ ] Manage metadata
• [ ] Build and install for all supported pipelines (based on SDK from #11)
• [ ] Run tests on different Postgres versions
• [ ] Bundle and Publish
• [ ] Publish to private registry