[meta] Buildkite

[tylersmalley]

If the Buildkite RFC is approved and merged, we will begin the work to transition our CI system from Jenkins to it. This issue serves to track that overall project.

Project: https://github.com/elastic/kibana/projects/73

• Slack Notifications [Buildkite] Slack Notifications #95718
• Baseline Pipeline [Buildkite] Baseline Pipeline #95717
• Monitoring and Alerting [Buildkite] Monitoring and Alerting #95716
• Misc [Buildkite] Misc #95715
• Intrastructure [Buildkite] Intrastructure #95714
• GitHub PR Comments [Buildkite] GitHub PR Comments #95713
• GitHub PR Bot [Buildkite] GitHub PR Bot #95712
• Agent Manager [Buildkite] Agent Manager #95711
• Agent Images [Buildkite] Agent Images #95710
• Agent Image Management [Buildkite] Agent Image Management #95709
• Single Sign-On [Buildkite] Single Sign-On #96079
• runbld / failed test dashboard replacement [Buildkite] runbld / failed test dashboard replacement #96244
• Containers [Buildkite] Explore Containerizing the Pipeline #97129
• ES Snapshots [Buildkite] ES Snapshots Pipeline #97130
• Flaky Test Suite Runner [Buildkite] Flaky Test Suite Runner #99125
• Pull Requests Pipeline [Buildkite] Pull Request Pipeline #99126
• Hourly CI Pipeline [Buildkite] Tracked Branches / Hourly CI Pipeline #99127

[elasticmachine]

Pinging @elastic/kibana-operations (Team:Operations)