Investigation of uncertain predictions

[tbohne]

• in certain cases it could be interesting to plot several heatmaps for one sample, e.g. for each class
• it would be interesting for very unsure predictions
• add a check for certainty of a prediction -> if it reaches a lower bound, the different CAMs are shown in order to understand what the model is looking at to "think" of the sample of being assigned to one class or the other
• again, this assumes that there is an option to plot several heatmaps for one sample (see Implement side-by-side plot of different CAM methods #1)