Add helpful descriptions of what the features are displayed in the SHAP plot

[wilkb777]

I like the SHAP plot showing what features the model considered in generating the DITTO score. However, it is not clear from looking at the text identifier of what each feature actually is. As an example in the plot below I have no idea what spliceai.ds_dl is or signifies and that would be nice to know since it appears to contributes significantly to the overall DITTO score for the variant.

Showing which features are important is a great step to explainable ML/AI. Adding a description of what the features mean/indicate would be very useful in fully explaining the relevance of them to users.