Added otlp for JS consumers and publishing.

[s3rius]

This PR adds more instrumentation for this library.

However, in order to instrument the lib, I had to update the API.

Now both pull and push consumers have similar semantics. Although push consumer has methods for direct fetching messages.

[codecov]

Codecov Report

❌ Patch coverage is 89.39394% with 7 lines in your changes missing coverage. Please review.
✅ Project coverage is 86.96%. Comparing base (9928961) to head (b1bddb7).
⚠️ Report is 1 commits behind head on master.
✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
src/js/consumers/pull/consumer.rs	86.66%	6 Missing ⚠️
src/js/consumers/push/consumer.rs	95.23%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master      #48      +/-   ##
==========================================
+ Coverage   86.61%   86.96%   +0.35%     
==========================================
  Files          32       32              
  Lines        3040     3100      +60     
==========================================
+ Hits         2633     2696      +63     
+ Misses        407      404       -3     

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