change: Better CLI with --help and --version

[mathysgrapotte]

Is your change request related to a problem? Please describe.

current CLI is not modular, we should create a main cli using click.

Describe the solution you'd like

something like this :

import click
from importlib.metadata import version

@click.group(context_settings={"help_option_names": ["-h", "--help"]})
@click.version_option(version("stimulus-py"), "-V", "--version")
def app():
    """Stimulus command line interface"""
    pass

# Import and register subcommands
from .shuffle_csv import shuffle_csv
from .transform_csv import transform_csv
from .split_csv import split_csv
from .check_model import check_model
from .tuning import tuning
from .split_split import split_split
from .split_transforms import split_transforms

app.add_command(shuffle_csv, name="shuffle-csv")
app.add_command(transform_csv, name="transform-csv")
app.add_command(split_csv, name="split-csv")
app.add_command(check_model, name="check-model")
app.add_command(tuning, name="tuning")
app.add_command(split_split, name="split-split")
app.add_command(split_transforms, name="split-transforms")

and then we could update existing cli modules to use click commands instead of standalone scripts, i.e. :

import click

@click.command()
@click.argument("input-file")
@click.option("--output", "-o", required=True)
def shuffle_csv(input_file, output):
    """Shuffle CSV file contents"""
    # ... existing implementation ...