Implement InterpreTabNet,

[cregouby]

Stable and Interpretable Deep Learning for
Tabular Data: Introducing InterpreTabNet with
the Novel InterpreStability Metric

• Attentive MLP
• multibranch weighted LU
• Interprestability
• interpretabnet vignette

[cregouby]

Interpretabnet is available in the branch feature/interpretabnet but doesn't bring any tangible value to the use-cases in test folder.