Creating eXplainability (XAI) Feature Element

[FMCalisto]

This issue aims at developing the same concept as demonstrated in the following Figure. When the user press the Explain button, the button will open the Heatmap prototype (issue #5 of the prototype-heatmap repository) for the respective Patient ID and images.

More precisely, the button will trigger a new tab for the new Heatmap prototype. From there, the user can close again the tab window, or can click on the first window again. Nevertheless, this solution will provide us a quick and easy way to provide user's free option to choose what to visualize.