otellogr: Implement Info, WithName, WithValues

[scorpionknifes]

This PR implements a few methods for otellogr package

• Info
• WithName
• WithValues

Out of scope

• Enabled
• Init
• Error
• Level
  Please add skip changelog thx 🙏

Part of #5192

[codecov]

Codecov Report

Attention: Patch coverage is 99.18699% with 1 line in your changes missing coverage. Please review.

Project coverage is 66.8%. Comparing base (256d350) to head (9ea2723).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
bridges/otellogr/convert.go	99.0%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##            main   #6111     +/-   ##
=======================================
+ Coverage   66.4%   66.8%   +0.3%     
=======================================
  Files        205     206      +1     
  Lines      13093   13207    +114     
=======================================
+ Hits        8706    8829    +123     
+ Misses      4119    4111      -8     
+ Partials     268     267      -1     

Files with missing lines	Coverage Δ
bridges/otellogr/logsink.go	98.2% <100.0%> (+18.6%)	⬆️
bridges/otellogr/convert.go	99.0% <99.0%> (ø)

... and 1 file with indirect coverage changes

[pellared]

Just two comments left. Nice work 👍

[pellared]

@dmathieu, can you please take a look?