Add third-party tracing integration guide (MLflow)

[B-Step62]

Hi team!

Semantic Kernel and Agent Framework both supports OpenTelemetry tracing, which allows users to export traces to third party tracing providers like MLflow. We (MLflow maintainers) have received questions about how to setup tracing for Semantic Kernel and Agent Framework from multiple times, therefore we believe it is benefitial for users to have a guide in the official documentation. Many other agent authroing frameworks have similar 3P tracing page(s) in their documentation.

Note: I could not find how to run preview website, so only checked the format via naive markdown preview. Please let me know if there is a way to build and preview doc page locally.

[B-Step62]

@microsoft-github-policy-service agree company="Databricks"

[learn-build-service-prod]

Learn Build status updates of commit febd726:

⚠️ Validation status: warnings

File	Status	Preview URL	Details
semantic-kernel/concepts/enterprise-readiness/observability/telemetry-with-mlflow.md	⚠️Warning		Details
semantic-kernel/concepts/enterprise-readiness/observability/TOC.yml	⚠️Warning		Details
agent-framework/user-guide/agents/agent-observability.md	💡Suggestion		Details
agent-framework/user-guide/workflows/observability.md	💡Suggestion		Details
semantic-kernel/concepts/enterprise-readiness/observability/index.md	💡Suggestion		Details

semantic-kernel/concepts/enterprise-readiness/observability/telemetry-with-mlflow.md

• Line 0, Column 0: [Warning: pivot-id-unused] Pivot ID 'programming-language-csharp' is defined in 'programming-languages' group in 'zone-pivot-groups.yml', but not used. You must use all pivot IDs in a pivot group to avoid blank tabs.
• Line 0, Column 0: [Warning: pivot-id-unused] Pivot ID 'programming-language-java' is defined in 'programming-languages' group in 'zone-pivot-groups.yml', but not used. You must use all pivot IDs in a pivot group to avoid blank tabs.
• Line 0, Column 0: [Suggestion: external-image] Image 'https://mlflow.org/docs/latest/images/llms/tracing/semantic-kernel-tracing.png' references an external site. This poses a security risk and external images are unavailable in some environments. Reference an image file within the repo instead.
• Line 0, Column 0: [Suggestion: filename-incomplete - See documentation] The filename contains an incomplete word, misspelled word, acronym, or abbreviation that is disallowed.
• Line 6, Column 11: [Suggestion: value-deprecated-replace - See documentation] The 'ms.topic: conceptual' you used is now deprecated and can no longer be used. We suggest you replace it with 'ms.topic: article'.

semantic-kernel/concepts/enterprise-readiness/observability/TOC.yml

• Line 12, Column 9: [Warning: file-not-found - See documentation] Invalid file link: 'mlflow.mdx'.

agent-framework/user-guide/agents/agent-observability.md

• Line 0, Column 0: [Suggestion: external-image] Image 'https://mlflow.org/docs/latest/images/llms/tracing/microsoft-agent-framework-tracing.png' references an external site. This poses a security risk and external images are unavailable in some environments. Reference an image file within the repo instead.

agent-framework/user-guide/workflows/observability.md

• Line 0, Column 0: [Suggestion: external-image] Image 'https://mlflow.org/docs/latest/images/llms/tracing/microsoft-agent-framework-tracing.png' references an external site. This poses a security risk and external images are unavailable in some environments. Reference an image file within the repo instead.

semantic-kernel/concepts/enterprise-readiness/observability/index.md

• Line 0, Column 0: [Suggestion: external-image] Image 'https://mlflow.org/docs/latest/images/llms/tracing/semantic-kernel-tracing.png' references an external site. This poses a security risk and external images are unavailable in some environments. Reference an image file within the repo instead.
• Line 6, Column 11: [Suggestion: value-deprecated-replace - See documentation] The 'ms.topic: conceptual' you used is now deprecated and can no longer be used. We suggest you replace it with 'ms.topic: article'.

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