Add TextClassification, UMAP, DBSCAN and TextClustering tasks

[plaguss]

Description

This PR adds a general TextClassification task, which can be useful for both label and multilabel classification.

Also UMAP, DBSCAN and TextClustering, which are quite related to each other, to generate clusters of text.

It was defined as part of a pipeline for text clustering, so may be biased towards that definition, but should be general enough to work on any common text classification tasks.

TODO. Create an example in the docs of a full text clustering pipeline, including the label inference.

[github-actions]

Documentation for this PR has been built. You can view it at: https://distilabel.argilla.io/pr-948/

[codspeed-hq]

CodSpeed Performance Report

Merging #948 will not alter performance

_{Comparing text-clustering (c0cbe15) with develop (28ecbc4)}

Summary

✅ 1 untouched benchmarks

[gabrielmbmb]

LGTM!