Cli: Various fixes

[jhnstn]

This fixes and cleans up a few issues:

1. Switch to using npm version to update package.json files
2. Re-order when the GBM release prepare steps update Gutenberg
3. Fix issues on how the command workspaces are manages
4. Add log level to the console output (plus us a higher contrast color for debugging)
5. Allow for skip adding the tag on GB

Testing:

• 'release prepare all {version}` should succeed (* Note this intermittent issue #195 )
• Verify that the modified package.json and package-lock.json files are correct i.e. The only changes should to the package version and nothing else