feat: add default scopes, make scope configuration optional (jwt only)

[MichaelGoberling]

Description

• Make scope configuration for auth step optional, add default of ent_adobeio_sdk scope (jwt only)
• Add a more descriptive error to deploy output when auth fails if the scopes are invalid
• Add formatting checks for optional SCOPES variable (jwt only)
• Move from @zeit/ncc to @vercel/ncc

Related Issue

https://github.com/adobe/aio-apps-action/issues/42

Motivation and Context

How Has This Been Tested?

Set up this action in a personal repo and pointed it to this branch

(These could probably be unit tests of some sort)

Successful deploy with default scopes

Successful deploy with configured scopes

Failed deploy, configured scopes have wrong format

Failed deploy, credential doesn't have access to the requested scopes

Screenshots (if appropriate):

Types of changes

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

Checklist:

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

[MichaelGoberling]

Converted this to a draft for now as we discuss with product what this should look like

[MichaelGoberling]

Marking this as ready for review again as we are now checking the formatting of the SCOPES environment variable and outputting helpful error messages