ci: add GHA to add PRs to project board when marked ready for review#5026

MikeGoldsmith wants to merge 3 commits intoopen-telemetry:mainopen-telemetry/opentelemetry-python:mainfrom

MikeGoldsmith:mike/add-to-project-ready-for-reviewMikeGoldsmith/opentelemetry-python:mike/add-to-project-ready-for-reviewCopy head branch name to clipboard