feat: Add custom SLI range interval for ai-gateway's dashboard
Dashboard snapshot:https://dashboards.gitlab.net/dashboard/snapshot/uPEHcvVvgprUhLtFK4bG96vLn2MFXpE8
Remediation for gitlab-com/gl-infra/platform/runway/team#89 (closed)
Dashboard snapshot:https://dashboards.gitlab.net/dashboard/snapshot/uPEHcvVvgprUhLtFK4bG96vLn2MFXpE8
Remediation for gitlab-com/gl-infra/platform/runway/team#89 (closed)