implement new cli

[beeman]

This PR replaces the CLI with a new implementation based on cloning git templates.

todo

• [x] Do proper semver >= check
• [x] Update template repo locations
• [x] Update package.json
• [x] Update CONTRIBUTING.md
• [x] Update MAINTAINERS.md
• [x] Verify unit tests
• [x] Verify publish/changesets config
• [x] Verify licenses