Integrate backstage README plugin

[stan-dot]

https://github.com/AxisCommunications/backstage-plugins/blob/main/plugins/readme/README.md

[stan-dot]

container issues

containers/podman#18691

containers/podman#18521

[stan-dot]

unassigning self due to developer setup difficulties and workstation vscode podman vs docker support, other issues /PRs have the same situation