Spike: Self-Managed AI Gateway Deployment through Runway
### Description
Self-managed instances should have their own AI Gateway, with Runway likely being the deployment method.
### Exit Criteria
- Develop a deployment process for the AI Gateway using Runway.
### Contraints
Runway is being considered as a deployment method for self-managed instances. However, the current underlying runtime of Runway is Cloud Run, which may not work for air-gapped customers. We're is looking into expanding the underlying runtime of Runway to support more complex services in the future. So, while it's not currently fully suited for self-managed instances, especially those that are air-gapped, it's a possibility being explored for the future.
### Links
- https://gitlab.com/groups/gitlab-com/gl-infra/-/epics/1206+s
- https://runway-docs-4jdf82.runway.gitlab.net/guides/onboarding/
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