POTEL 66 - Move OpenTelemetryUtil into core sentry

[adinauer]

#skip-changelog

📜 Description

Move OpenTelemetryUtil from sentry-opentelemetry-bootstrap into core sentry module.

💡 Motivation and Context

Avoids having to have bootstrap as a dependency just to configure the SDK correctly for use with OpenTelemetry.

💚 How did you test it?

📝 Checklist

• I added tests to verify the changes.
• No new PII added or SDK only sends newly added PII if sendDefaultPII is enabled.
• I updated the docs if needed.
• I updated the wizard if needed.
• Review from the native team if needed.
• No breaking change or entry added to the changelog.
• No breaking change for hybrid SDKs or communicated to hybrid SDKs.

🔮 Next steps

[github-actions]

	Messages
📖	Do not forget to update Sentry-docs with your feature once the pull request gets approved.

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[lbloder]

LGTM 👍