Expose meta data (width, height etc) from cloudinaryImage field via GraphQL queries

[bladey]

We're providing width/height from the images (local) field but no data from CloudinaryImage, even though we appear to be storing it in JSON format in the DB.

We need this to properly display images via width/height and determine ratios for output.

Sourced from Keystone Community Slack - https://keystonejs.slack.com/archives/C01STDMEW3S/p1636578575294600