Added otlp instrumentation.

[s3rius]

This PR adds opentelemetry support.

[codecov]

Codecov Report

❌ Patch coverage is 58.33333% with 10 lines in your changes missing coverage. Please review.
✅ Project coverage is 86.92%. Comparing base (48e27e2) to head (16c0f20).
✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
src/js/message.rs	0.00%	6 Missing ⚠️
src/message.rs	0.00%	3 Missing ⚠️
src/subscriptions/callback.rs	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master      #46      +/-   ##
==========================================
- Coverage   87.33%   86.92%   -0.41%     
==========================================
  Files          30       30              
  Lines        2993     2953      -40     
==========================================
- Hits         2614     2567      -47     
- Misses        379      386       +7     

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