Publish DD M19 (v0.22.0)

Publish the milestone 19 snapshot for

• Generated JSON schemas,
• Auto-generated Examples and Worked Examples
• Schema Registration Resources
• Documentation
• Reference data manifests
• Schema Usage Guide

commit SHA e09c0b42e510f9893c386654ec9a117520501d5d (Member GitLab)

Closes #61 (closed)