chore: Add dev boot profiling and analysis scripts
Add scripts for profiling and analyzing dev server boot performance:
- trace-cli-startup.js: Use V8 Inspector API to trace module loading
at CLI startup, identifies slow-loading modules
- profile-next-dev-boot.js: Profile dev server boot with CPU profiling
- benchmark-next-dev-boot.js: Benchmark multiple boot cycles
- analyze-profile.js: Analyze CPU profiles for hot modules
- analyze-dev-server-bundle.js: Analyze webpack bundle composition
These tools help identify performance bottlenecks during development.
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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
