Rename predictive_sliders to predictive_explorer refactor and new features

[aloctavodia]

• This renames the predictive_slider function to predictive_explorer, as we no longer use sliders but float or int boxes. This makes it easier to explore a wider range of values without PreliZ having to guess a good default range. The alternative could be to add boxes to set the minimum and maximum values of sliders, but that will be a more complex interface with little gain for users.

• This also adds a resample button, so users can explore how the prior predictive distribution changes even without changing any parameter. This adds the option to set the values of x_lim for the plot.

• This also changes the default to ecdf (empirical cdf) instead of KDE

[codecov-commenter]

Codecov Report

Merging #292 (beafa01) into main (90cfe15) will increase coverage by 0.06%.
The diff coverage is 94.11%.

@@            Coverage Diff             @@
##             main     #292      +/-   ##
==========================================
+ Coverage   82.43%   82.49%   +0.06%     
==========================================
  Files          32       32              
  Lines        3906     3937      +31     
==========================================
+ Hits         3220     3248      +28     
- Misses        686      689       +3     

Files	Coverage Δ
preliz/internal/parser.py	63.01% <100.00%> (ø)
preliz/predictive/__init__.py	100.00% <100.00%> (ø)
preliz/predictive/predictive_explorer.py	85.00% <100.00%> (ø)
preliz/tests/test_predictive_explorer.py	100.00% <100.00%> (ø)
preliz/internal/plot_helper.py	72.36% <90.62%> (+1.19%)	⬆️