[WIP] perf: serialize telemetry batches on shared thread pool#1883

jpnurmi wants to merge 4 commits into

jpnurmi/ref/sentry-telemetrygetsentry/sentry-native:jpnurmi/ref/sentry-telemetryfrom

jpnurmi/perf/thread-poolgetsentry/sentry-native:jpnurmi/perf/thread-poolCopy head branch name to clipboard