Minor Bugfixed for shapiq.waterfall_plot

[Advueu963]

TL;DR

This pull request addresses a bug in the waterfall_plot function, improves functionality, and enhances testing.
The changes include fixing visual issues in the plot, renaming the file for consistency, and adding safeguards to ensure proper rendering of y-ticks.

Bug Fixes and Enhancements to waterfall_plot:

• Fixed a bug in the waterfall_plot function that caused y-ticks to be cut off. Slightly adjusted y_height and added logic to dynamically resize the figure width based on the maximum y-tick label width. [1] [2]
• Replaced a formatting bug in y-tick labels with an f-string to correctly display the number of grouped features.

File Renaming for Consistency:

• Renamed the file shapiq/plot/watefall.py to shapiq/plot/waterfall.py to match the function name and updated the import in shapiq/plot/__init__.py. [1] [2]

Testing Enhancements:

• Updated test_waterfall_cooking_game to include visual inspection tests for scenarios with different max_display values, ensuring no cutoffs in the plot. [1] [2]