Add action to detect news changes

[rjake]

see:

• marketplace/check-for-changed-files - https://github.com/marketplace/actions/check-for-changed-files
• Foodee/pr-includes-file-change https://github.com/Foodee/pr-includes-file-change
• release-drafter/release-drafter (see sqlfluff)
• marketplace - other - https://github.com/marketplace?type=actions&query=file+change+