[FEATURE] Add `PrometheusEval` example and paper reproduction

[alvarobartt]

Description

Since we're reproducing some papers with the distilabel task created to do so, we recently created PrometheusEval, but no tutorial has been uploaded yet, only https://x.com/alvarobartt/status/1788152893461123105 was posted.

So on, we will need to write a paper reproduction as of e.g. UltraFeedback at https://distilabel.argilla.io/dev/sections/examples/papers/ultrafeedback/