docs: add v0.1.13 wind gust model to new_features.ipynb

[AadilLatif]

This pull request adds documentation for the new non-hurricane wind gust modeling features in version 0.1.13. The main additions include a detailed description of the WindGustModel and GustModelArea classes, their physics, performance optimizations, and a code example demonstrating usage.

New wind gust modeling documentation:

• Added a section describing the new WindGustModel for non-hurricane wind events, including details on the GustModelArea, distance-decay physics, UTM-based calculations, visualization, and CLI support.
• Documented performance optimizations, such as caching UTM projections and using efficient per-asset computations, resulting in significant speed improvements.
• Included a code example showing how to create and use a WindGustModel and GustModelArea for a thunderstorm event.