EIUNAB-3645/Impact : Work with Teams to get the YAML into Backstage.io for all projects

[impactyogi]

Description Add to Backstage - Economist Impact Signal Noise Team

Reason for change Backstage.io rollout across the Economist Group via platform.economist.com

Breaking changes None

Remarks Github added, CircleCI Added (where CICD applicable), New Relic added, Opsgenie added (where applicable), docs file added to be updated in depth by the team upon review.

Testing Once merged the Enablement team will test integration into backstage. The yaml files are pulled via polling on the main branch for automated incorporation.

Checklist My commits, pull request name follow the Conventional Commits style I have made corresponding changes to the documentation I have updated unit tests, integration tests I have tested in dev environment I have update swagger, where applicable I have provided cdk diff result for infrastructure changes, where applicable