[feature]: Add OpenTelemetry Metrics and Traces Export to Honeycomb

[Jharmony]

Instrument bazar-studio with OpenTelemetry to export metrics and traces to Honeycomb.

Tasks

• Add OpenTelemetry JS SDK and HTTP exporter dependencies.
• Configure metrics exporter with:
  • OTEL_EXPORTER_OTLP_METRICS_ENDPOINT=https://api.honeycomb.io/v1/metrics
  • x-honeycomb-team header for API key.
• (Optional) Configure traces exporter with:
  • OTEL_EXPORTER_OTLP_TRACES_ENDPOINT=https://api.honeycomb.io/v1/traces
• Add basic application metrics (e.g., page load, API call counts).
• (Optional) Add traces for user interactions.
• Update README with setup instructions.
• Test and confirm metrics/traces in Honeycomb.

References

• Honeycomb OpenTelemetry docs
• OpenTelemetry JS SDK

Notes

• Use HTTP/Protobuf for best compatibility.
• Document all new environment variables.