Contribute OTLP UDP Exporter

[Jeel-mehta]

Issue #, if available:

Description of changes:
Contributing our OTLP UDP exporter.

Testing:
Published the package to MavenLocal and tried running the sample app

Ran the unit tests as well

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[codecov-commenter]

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Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 69.49%. Comparing base (09e6487) to head (b46392f).
Report is 403 commits behind head on main.

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Additional details and impacted files

@@              Coverage Diff              @@
##               main    #1035       +/-   ##
=============================================
- Coverage     85.71%   69.49%   -16.22%     
- Complexity       19      325      +306     
=============================================
  Files             3       26       +23     
  Lines            49     1177     +1128     
  Branches          5      166      +161     
=============================================
+ Hits             42      818      +776     
- Misses            3      304      +301     
- Partials          4       55       +51     

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[jj22ee]

Apart from the open comments, the rest of the PR lgtm!

[jj22ee]

fyi, I don't see the unit tests automatically running in the workflows anymore.

Given you have already run the unit tests successfully locally, and the future release workflow will run the unit tests, let's get this merged as to not delay this PR further. I'll followup with a workflow that runs the unit tests when the steps to publish this exporter are added.