Benchmarks

[podocarp]

Note

Introduces a tinybench-based profiling workflow with a local Express test server and updates deps/scripts (migrating to @opentelemetry/sdk-node), along with new benchmark result artifacts.

• Benchmarks/Profiling:
  • Add benchmarks/profile/simple.profile.ts (+ JS) using tinybench to run high-throughput GETs against a local server.
  • Add benchmarks/server/test-server.ts (+ JS) implementing multiple endpoints (simple, POST, payload sizes, CPU/IO, proxy, stream, error, slow) for benchmarking.
  • Add result artifacts in benchmarks/results/*.json and profiling meta in benchmarks/profile/results/meta.json.
• Tooling/Config:
  • Update package.json: migrate tracing to @opentelemetry/sdk-node with @opentelemetry/instrumentation(-http), add tinybench, add benchmark:compare script, remove postinstall, and drop `

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[sohankshirsagar]

lgtm! just need to fix the build errors