Summary

Introduce four simple Add* recipes that add common GitLab CI/CD best-practice keywords to .gitlab-ci.yml files. Each recipe is a thin wrapper around MergeYaml with straightforward single-value YAML snippet construction.

Recipes

• AddInterruptible — Sets interruptible: true in default: or a named job
• AddTimeout — Sets timeout: duration in default: or a named job
• AddArtifactsExpireIn — Sets artifacts: expire_in: in default: or a named job
• AddDefaultKeyword — Generic recipe to add any keyword/value under default:

All support optional jobName (to target a specific job instead of default:) and acceptTheirs (to preserve existing values).

Related

• Parent issue: Provide a set of 'Best Practices' that can be implemented via recipes #12
• Find recipes PR: Add search recipes for deprecated only/except keywords #32
• More complex recipes (AddRetry, AddCache, AddWorkflowRules, BestPractices composite) will follow in subsequent PRs