feat(spooler): Implement eviction mechanism when buffer is full #15324

Job	Run time
Lint	3m 0s
Setup build metadata	1s
Lint Rust Default Features	1m 39s
Test All Features (ubuntu-latest)	3m 31s
Test (macos-latest)	2m 9s
Integration Tests	12m 8s
Test (windows-latest)	5m 24s
Test Python	59s
Build Relay Binary (relay, x86_64-unknown-linux-gnu)	8m 3s
Build Docker Image (relay)	30s
Sentry-Relay Integration Tests	11m 40s
Publish Relay to DockerHub	0s
self-hosted-end-to-end	13m 34s
Publish Relay to GCR	0s
Upload build artifacts to gocd	0s
	1h 2m 38s

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