RUM-5757 benchmark: Collect Session Replay Record Spans

[maxep]

What and why?

Do not merge: Tracer perfs skew the measures

Collection traces of the recording phase of Session Replay.

How?

• Create an OpenTelemetry tracer
• Inject the tracer in the SDK
• Start/Stop spans of recorders.

Review checklist

• Feature or bugfix MUST have appropriate tests (unit, integration)
• Make sure each commit and the PR mention the Issue number or JIRA reference
• Add CHANGELOG entry for user facing changes

[datadog-datadog-prod-us1]

Datadog Report

Branch report: maxep/RUM-5757/benchmark-profiling-imp
Commit report: 90d5b27
Test service: dd-sdk-ios

✅ 0 Failed, 3432 Passed, 0 Skipped, 2m 21.7s Total Time
🔻 Test Sessions change in coverage: 12 decreased, 2 increased

🔻 Code Coverage Decreases vs Default Branch (12)

This report shows up to 5 code coverage decreases.

• test DatadogLogsTests tvOS 46.81% (-1.16%) - Details
• test DatadogLogsTests iOS 46.76% (-1.15%) - Details
• test DatadogCrashReportingTests tvOS 26.63% (-0.28%) - Details
• test DatadogCrashReportingTests iOS 26.58% (-0.28%) - Details
• test DatadogCoreTests tvOS 78.57% (-0.19%) - Details