Set up IFTTT-style task automation framework

[stephanosio]

Set up a self-hosted IFTTT-style task automation framework for streamlining the process of automating and managing simple tasks.

Candidates

• n8n
• Node-RED

The automation framework, whichever we choose, will be deployed in the containerised form in the zephyr-alpha Kubernetes cluster.

Use Cases

• Publish scheduled build results to a mailing list #3
• Add workflow to warn about unauthorised branches #15
• Add force-push event logging #34
• Send notifications when Zephyr main breaks #35