Add Insights & Annotations sections in "Performance features reference"

[mikehoffms]

Strategy: Might Close this PR and cover this work in PR 3345 instead.

Rendered article section for review:

• Introduction to the Performance tool > foo
  • Internal preview: https://review.learn.microsoft.com/en-us/microsoft-edge/devtools-guide-chromium/evaluate-performance/index?branch=pr-en-us-3346
  • External preview: https://github.com/MicrosoftDocs/edge-developer/blob/user/mikehoffms/perf-insights-annotations/microsoft-edge/devtools-guide-chromium/evaluate-performance/index.md
  • Before/Live: https://learn.microsoft.com/microsoft-edge/devtools-guide-chromium/evaluate-performance/
  • todo: Add section: https://developer.chrome.com/docs/devtools/performance/reference#insights - Insights tab
  • todo: Add section: https://developer.chrome.com/docs/devtools/performance/reference#annotate - Annotations tab

AB#55537235

[learn-build-service-prod]

Learn Build status updates of commit fb22e77:

✅ Validation status: passed

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microsoft-edge/devtools-guide-chromium/evaluate-performance/index.md	✅Succeeded	View

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[learn-build-service-prod]

Learn Build status updates of commit d8d6c12:

✅ Validation status: passed

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

For more details, please refer to the build report.

For any questions, please:

• Try searching the learn.microsoft.com contributor guides
• Post your question in the Learn support channel

[learn-build-service-prod]

Learn Build status updates of commit 074186f:

✅ Validation status: passed

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

For more details, please refer to the build report.

For any questions, please:

• Try searching the learn.microsoft.com contributor guides
• Post your question in the Learn support channel

[learn-build-service-prod]

Learn Build status updates of commit 94e4e4f:

✅ Validation status: passed

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

For more details, please refer to the build report.

For any questions, please:

• Try searching the learn.microsoft.com contributor guides
• Post your question in the Learn support channel

[mikehoffms]

cover this work in PR 3345 instead