feat(render-performance): add draft Summary View alongside Raw Logs

[ganshul34]

What this does

• Introduces a new Summary View for Render Performance
  • Aggregates component render data
  • Shows initial render, avg re-render, and render count
  • Displays the top 5 slowest components
• Refactors existing Raw Logs view into a separate route/component
• Prepares structure for tabbed navigation between Summary and Raw Logs

Related Issue

Closes #2681

Pending

• Replace plain links with button-style tabs for switching between views
• UI polish (styling, spacing, empty states)
• Additional metrics (timeline/histogram exploration)

Screenshots

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Opening as a draft so maintainers can review direction early. Feedback welcome on:

• File structure (routes vs components)
• Data grouping/aggregation approach
• UX direction for switching between Summary and Raw Logs