feat: propagate newrelic tx info by using fiber.Ctx and little refact…

[Abdulsametileri]

In order to create segments we need to pass created new relic transaction using fiber.Ctx to the chain.

[ReneWerner87]

@mstrYoda can you review

[mstrYoda]

It seems ok to me 👍 I talked with the author, he will add a benchmark test to see if allocation count increased or not 👍

[Abdulsametileri]

Here the benchmark results

go test -bench='.' -benchtime='3s' -benchmem                                                                    ✔  9s  10:30:52 
goos: darwin
goarch: arm64
pkg: github.com/gofiber/contrib/fibernewrelic
BenchmarkNew-10           297830             10180 ns/op            7770 B/op         45 allocs/op
BenchmarkOld-10           362887              9865 ns/op            7695 B/op         45 allocs/op
PASS
ok      github.com/gofiber/contrib/fibernewrelic        10.122s

allocation is OK!

ns/op increased because we added newrelic transaction c.SetUserContext(newrelic.NewContext(c.UserContext(), txn))

[mstrYoda]

Thank you for your contribution @Abdulsametileri 🙏

[Abdulsametileri]

Hello @ReneWerner87, is it possible to create a new release for the fibernewrelic package? 🤔

[ReneWerner87]

https://github.com/gofiber/contrib/releases/tag/fibernewrelic%2Fv1.2.0