feat(web): add rank numbers to benchmark results display

[ImBIOS]

🎯 Purpose

This PR adds rank numbers to the benchmark results display in the web interface to make performance comparisons more accessible for presentations and quick analysis.

📋 Changes

• Display rank numbers: Each library now shows its ranking position (e.g., #1 typia, #2 ajv) next to the library name
• Smart ranking calculation: Rankings are calculated based on average performance across all selected benchmarks
• Multi-sort support: Ranking works correctly with all three sorting modes:
  • Fastest: Ranks by average operations per second (descending)
  • Alphabetical: Maintains alphabetical order with rank numbers
  • Popularity: Ranks by npm weekly downloads
• Performance-aware: When multiple benchmarks are selected, uses average ops/sec for fair comparison

🖼️ Visual Impact

Before: Library names displayed without ranking context
After: Clear rank indicators (#1, #2, #3, etc.) make it easy to identify top performers at a glance

🧪 Testing

• ✅ TypeScript compilation passes
• ✅ Build process completes successfully
• ✅ All sorting modes work correctly with rankings
• ✅ Multi-benchmark averaging works as expected

💼 Business Value

Makes benchmark presentations more professional and easier to understand for stakeholders by providing clear performance rankings without requiring detailed analysis of raw numbers.

Closes #2062