Input variable plots + Score comparison
This MR adds a the following:
1: Script and setting yaml file for input variable plots. These are customizable to any wishes and can be extended easily for more variables.
2: Also presentable pt and eta plots are added to the preprocessing script before and after undersampling.
3: Adding a new score plotting method to extend the comparison file plottings. Two models can now be given to the new function. These are plotted for comparison with customizable Ratio subplot.