feat: Create Argilla CallBack for haystack

[kursathalat]

As pointed out in argilla-io/argilla#4235 and #1, this PR creates the first version of the CallBackHandler for Argilla. This first version introduces the basic functionalities with the given to-dos. With the test file, the script can be run for testing.

[davidberenstein1957]

Looking good already. Could you add an example .md to showcase the usage and remove nb-test?

[davidberenstein1957]

@kursathalat https://docs.argilla.io/en/latest/tutorials_and_integrations/integrations/use_argilla_callback_in_langchain.html#an-llm

an overview like this would be great :)

[davidberenstein1957]

@alvarobartt do you think it makes sense to align this with the chat format you discussed for distilabel and potentially align that within out langchain integration too?

[davidberenstein1957]

Hi @kursathalat, I've just set up the outline for the project and created an initial deployment. Would you be able to work on the following things:

• update readme.md with a basic example we can reuse. Something of the length of out Langchain should work, however, something a bit longer like other examples at Haystack is better.
• create a tests module with functionality tests
• create a PR at haystack-integrations
• Also, some basic code can be cleaned by removing comments etc.