feat: config upgrade via hook

[shazron]

Description

The config keys for console config for the org, project and workspace settings is changing.
Currently it is under the key $console. This has been changed to console (no $ prefix).

An init hook is added that will check the user's config, and will migrate an older key to the new key, if the older key exists.

However, If the new key already exists, there will be no migration, nor will the older key be deleted.

How Has This Been Tested?

npm test

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• I have signed the Adobe Open Source CLA.
• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.

[purplecabbage]

This is looking good. I was expecting the hook to live in the config lib directly, since it already has a hook. We can remove the previous code from the hook too.