feat: Add configuration to allow adjusting the batch and queue sizes for logs and spans.

[kinyoklion]

BEGIN_COMMIT_OVERRIDE
feat: Add configuration to allow adjusting the batch and queue sizes for logs and spans.
feat: Adjust the default export and queue batch sizes for logs and spans to match the otel defaults.
END_COMMIT_OVERRIDE

Summary

Adds the ability to configure the max queue size and export batch size for logs and traces.

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Note

Adds configurable max export batch sizes and queue sizes for spans and logs, sets sensible defaults, and propagates them through initialization to OTLP providers.

• Configuration:
  • Add fields to observabilityConfig for spanMaxExportBatchSize, spanMaxQueueSize, logMaxExportBatchSize, logMaxQueueSize with defaults (spans from sdktrace defaults; logs via copied constants).
  • New options: WithSpanMaxExportBatchSize, WithSpanMaxQueueSize, WithLogMaxExportBatchSize, WithLogMaxQueueSize.
• Initialization:
  • Pass new sizing configs via otel.SetConfig in go/initialize.go.
• OTEL Integration:
  • Extend internal/otel.Config with corresponding fields.
  • Use these values in tracer/log batch processors instead of hardcoded sizes.
• Tests:
  • Add go/config_test.go covering defaults and option setters.

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[Vadman97]

lgtm pending the cursor-reported bug