feat: add GCP OIDC exchange template

mentioned in commit 04169b1e

mentioned in merge request infradev-report!58 (merged)

mentioned in merge request common-ci-tasks-images!122 (merged)

mentioned in merge request jsonnet-tool!63 (merged)

mentioned in merge request asdf-gl-infra!35 (merged)

mentioned in merge request gitlab-com/gl-infra/platform/runway/runwayctl!17 (merged)

mentioned in merge request gitlab-com/gl-infra/platform/gitlab-issue-report-kit!16 (merged)

mentioned in merge request gitlab-org/release-tools!2414 (merged)

mentioned in merge request fluentd-docker!51 (merged)

mentioned in merge request es-diagnostics!15

mentioned in merge request gitlab-com/gl-infra/k8s-workloads/common!301 (merged)

mentioned in merge request gitlab-com/runbooks!5877 (merged)

mentioned in merge request slackline!172 (merged)

mentioned in merge request gitlab-com/gl-infra/gitlab-dedicated/library/byok-status-exporter!46 (merged)

mentioned in merge request gitlab-com/gl-infra/gitlab-dedicated/library/terraform/cloudwatch_log_export!23 (merged)

mentioned in merge request gcp-quota-exporter!2 (merged)

mentioned in merge request asdf-gl-infra!44 (closed)

mentioned in merge request fluentd-docker!58 (merged)

mentioned in merge request es-diagnostics!18 (closed)

mentioned in merge request slackline!200 (closed)

mentioned in merge request es-diagnostics!21