Telemetry: Deduplicate log entries

[marcotc]

This PR removes duplicate telemetry logs sent within the same batch (currently 10s). The number of occurrences is captured in the new count field for the Log telemetry event, so we can know how many events were removed as duplicated.

[pr-commenter]

Benchmarks

Benchmark execution time: 2024-11-26 02:35:10

Comparing candidate commit 7a47b59 in PR branch dedup-logs with baseline commit 0c7a8c0 in branch disable-env-logs.

Found 3 performance improvements and 0 performance regressions! Performance is the same for 28 metrics, 2 unstable metrics.

scenario:library - Gem loading

• 🟩 throughput [+0.137op/s; +0.144op/s] or [+5.121%; +5.413%]

scenario:tracing - Propagation - Datadog

• 🟩 throughput [+2494.342op/s; +2579.313op/s] or [+8.179%; +8.458%]

scenario:tracing - Tracing.log_correlation

• 🟩 throughput [+8099.292op/s; +8463.716op/s] or [+7.344%; +7.674%]