POC: Capture and store runner worker VM hostname in GitLab for fleeting+taskscaler autoscaling

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Overview

Develop POC to capture and store the runner worker VM hostname in GitLab for runner workers created by the Fleeting+Taskscaler autoscaler.

Proposal

• Create a generic mechanism that captures only the runner worker hostname to start
• Store the data for max 1 year.
• The data will not be searchable outside of the Clickhouse DB
• The data will be accessible via API (Graphql)
• The data will be initially stored in Postgres and then migrated to Clickhouse
• API calls will query Postgres for runner worker data for only individual jobs.
• API calls will query Clickhouse for aggregated data