Copy common helpers into each feature directory for build context inclusion#1561

abdurriq with Copilot wants to merge 5 commits into

copilot/unify-user-selection-logicdevcontainers/features:copilot/unify-user-selection-logicfrom

copilot/fix-github-actions-workflow-againdevcontainers/features:copilot/fix-github-actions-workflow-againCopy head branch name to clipboard