add span name generator for otelgin option

[jojotong]

No description provided.

[linux-foundation-easycla]

The committers listed above are authorized under a signed CLA.

• ✅ login: jojotong (a5f2428)

[codecov]

Codecov Report

Merging #3343 (a7d5884) into main (e31186a) will increase coverage by 0.0%.
The diff coverage is 100.0%.

Additional details and impacted files

@@          Coverage Diff          @@
##            main   #3343   +/-   ##
=====================================
  Coverage   69.6%   69.6%           
=====================================
  Files        147     147           
  Lines       6910    6919    +9     
=====================================
+ Hits        4812    4821    +9     
  Misses      1978    1978           
  Partials     120     120           

Impacted Files	Coverage Δ
...ation/github.com/gin-gonic/gin/otelgin/gintrace.go	83.5% <100.0%> (+0.9%)	⬆️
...ntation/github.com/gin-gonic/gin/otelgin/option.go	100.0% <100.0%> (ø)

[dmathieu]

I think this should be named WithSpanNameFormatter, to match the net/http config.
https://github.com/open-telemetry/opentelemetry-go-contrib/blob/main/instrumentation/net/http/otelhttp/config.go#L189

[jojotong]

I think this should be named WithSpanNameFormatter, to match the net/http config.

Thanks for notice, I've changed to to match the net/http config

[dmathieu]

@jojotong could you fix the tests, lint and add a changelog entry?

[jojotong]

@dmathieu fixed.

[jojotong]

Rebased to resolve conflicts.