Added finagle Http client

[JonasKunz]

What does this PR do?

Add support for the finagle http client (#2794).
Works, as long as the HTTP call is made from a non-finagle thread context.
Otherwise, we will need support for the finagle context propagation mechanism.

Checklist

• This is a new plugin
  • I have updated CHANGELOG.asciidoc
  • My code follows the style guidelines of this project
  • I have made corresponding changes to the documentation
  • I have added tests that prove my fix is effective or that my feature works
  • New and existing unit tests pass locally with my changes
  • I have updated supported-technologies.asciidoc
  • Added an API method or config option? Document in which version this will be introduced
  • Added an instrumentation plugin? Describe how you made sure that old, non-supported versions are not instrumented by accident.

[ghost]

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Build stats

• Start Time: 2022-11-24T10:39:07.278+0000

• Duration: 60 min 6 sec

Test stats 🧪

Test	Results
Failed	0
Passed	3218
Skipped	39
Total	3257

💚 Flaky test report

Tests succeeded.

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/test

[jackshirazi]

Looks like it was painful to do