streamingccl: job profiling integrations

[stevendanna]

Stub tracking issue for ideas about integrating the job profiler

• [x] Wire up agg stats [aditya]
• [x] DistSQL Plan processor annotations [ssd]
• [x] Attach job id to pprof labels on the producer event_stream [ssd]
• [ ] Source-Dest-Span-Frontier table output [aditya]
• [ ] BatchSize statistics in partition client
• [x] Ingestion stats from SST batcher
• [ ] Ingestion stats from RangeKeyBatcher [ssd]

Jira issue: CRDB-30443 Epic: CRDB-8964

[blathers-crl[bot]]

cc @cockroachdb/disaster-recovery