Update CODEOWNERS (#8342)

* Update CODEOWNERS

Added owners for official and research model folders
Removed owners of removed folders

* Update README.md

Added new introduction messages for the Model Garden

Jaeyoun Kim committed 6y ago

fc3029e634188751742e6784d36b85ad21b11e37

Parent: 6d7030f

Committed by GitHub <noreply@github.com> on 3/31/2020, 5:35:34 PM