Add article "Customize your performance data with extensibility API"

[mikehoffms]

Rendered article for review:

• Customize your performance data with extensibility API
  • /devtools-guide-chromium/performance/extension.md
  • Internal preview: https://review.learn.microsoft.com/microsoft-edge/devtools-guide-chromium/performance/extension?branch=pr-en-us-3406
  • External preview: https://github.com/MicrosoftDocs/edge-developer/blob/user/mikehoffms/extensibility/microsoft-edge/devtools-guide-chromium/performance/extension.md
  • Planned live: https://learn.microsoft.com/microsoft-edge/devtools-guide-chromium/performance/extension
  • Added article.

AB#55538778

[learn-build-service-prod]

Learn Build status updates of commit f1e91ea:

✅ Validation status: passed

File	Status	Preview URL	Details
microsoft-edge/devtools-guide-chromium/performance/extension.md	✅Succeeded	View
microsoft-edge/toc.yml	✅Succeeded	View

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[learn-build-service-prod]

Learn Build status updates of commit 17893d9:

✅ Validation status: passed

File	Status	Preview URL	Details
microsoft-edge/devtools-guide-chromium/performance/extension.md	✅Succeeded	View
microsoft-edge/toc.yml	✅Succeeded	View

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[learn-build-service-prod]

Learn Build status updates of commit 4a21116:

✅ Validation status: passed

File	Status	Preview URL	Details
microsoft-edge/devtools-guide-chromium/performance/extension.md	✅Succeeded	View
microsoft-edge/devtools-guide-chromium/performance/index.md	✅Succeeded	View
microsoft-edge/toc.yml	✅Succeeded	View

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[learn-build-service-prod]

Learn Build status updates of commit ab3c322:

✅ Validation status: passed

File	Status	Preview URL	Details
microsoft-edge/devtools-guide-chromium/performance/extension.md	✅Succeeded	View
microsoft-edge/devtools-guide-chromium/performance/index.md	✅Succeeded	View
microsoft-edge/toc.yml	✅Succeeded	View

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[learn-build-service-prod]

Learn Build status updates of commit ec76a14:

✅ Validation status: passed

File	Status	Preview URL	Details
microsoft-edge/devtools-guide-chromium/performance/extension.md	✅Succeeded	View
microsoft-edge/devtools-guide-chromium/performance/index.md	✅Succeeded	View
microsoft-edge/toc.yml	✅Succeeded	View

For more details, please refer to the build report.

For any questions, please:

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• Post your question in the Learn support channel