Add CLI

[gabrielmbmb]

Description

This PR adds a CLI application to distilabel that allows (for now) to:

1. Run a pipeline given the config YAML file that can be either a local file or a URL:

   distilabel pipeline run --config pipeline.yaml \
       --param load_hub_dataset.repo_id=HuggingFaceH4/instruction-dataset \
       --param load_hub_dataset.split=test \
       --param text_generation_gpt.num_generations=3 \
       --param text_generation_gpt_2.num_generations=3 \
       --param push_to_hub.repo_id=distilabel-internal-testing/testing-distilabel-push-to-hub \
       --param push_to_hub_2.repo_id=distilabel-internal-testing/testing-distilabel-push-to-hub-2 \
       --ignore-cache \
       --repo-id distilabel-internal-testing/testing-distilabel-cli \
       --commit-message "Testing pipeline"

2. Get the information of a pipeline (name, description, steps, runtime parameters, etc) given the config YAML file or a URL:

   distilabel pipeline info --config pipeline.yaml