Add skeleton for otellogr bridge

[scorpionknifes]

This PR is the skeleton for otellogr package, which provides a LogSink to bridge the logging capabilities for Logr with OpenTelemetry

Please add skip changelog thx 🙏

Part of #5192

[codecov]

Codecov Report

Attention: Patch coverage is 79.54545% with 9 lines in your changes missing coverage. Please review.

Project coverage is 65.7%. Comparing base (4ccc9c6) to head (8cd4286).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
bridges/otellogr/logsink.go	79.5%	9 Missing ⚠️

Additional details and impacted files

@@          Coverage Diff          @@
##            main   #6097   +/-   ##
=====================================
  Coverage   65.7%   65.7%           
=====================================
  Files        203     204    +1     
  Lines      13039   13083   +44     
=====================================
+ Hits        8572    8605   +33     
- Misses      4205    4215   +10     
- Partials     262     263    +1     

Files with missing lines	Coverage Δ
bridges/otellogr/logsink.go	79.5% <79.5%> (ø)

... and 1 file with indirect coverage changes

[pellared]

We can also update CODEOWNERS in this PR if you want.