feat(modelling): enhance prediction task detection

[jfsantos-ds]

Description of the feature

• Enhance the prediction task detection
• Leverage dtypes and other properties (if applicable)

Acceptance criterias (if applicable)

Given a categorical label with 2 or more unique values, classification task still correctly detected
Regression tasks correctly detected

Additional context

• Based on the previous to do in get_prediction_task:

TODO: Improve prediction type guesstimate based on alternative heuristics (e.g. dtypes, value_counts)