feat(metrics-summaries): Emit summaries to their own topic #11221

Job	Run time
Build Docker Image (amd64, relay)	14m 40s
Lint	2m 44s
Lint Rust Default Features	1m 9s
Build Docker Image (amd64, relay-pop)	12m 33s
Test (macos-latest)	5m 47s
Test All Features (ubuntu-latest)	6m 36s
Integration Tests	9m 29s
Test (windows-latest)	4m 26s
Test Python 3.10	1m 50s
Sentry-Relay Integration Tests	10m 1s
Publish Relay to DockerHub	0s
Push GCR Docker Image (relay)	1m 3s
Push GCR Docker Image (relay-pop)	1m 3s
	1h 11m 21s

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