Add nannou feature flag and use in visualisation

[alexespencer]

No description provided.

[Copilot]

Pull Request Overview

This PR introduces a new "nannou" feature flag and updates the code to leverage conversions between quadtree regions and nannou rectangles in the visualization module. Key changes include:

• Refactoring region conversion in visualize/src/model.rs to use Into/From implementations.
• Updating dependency declarations in Cargo.toml files to support the nannou feature.
• Adding cfg-based implementations in quadtree/src/region.rs and quadtree/src/quadtree.rs for nannou.

Reviewed Changes

Copilot reviewed 8 out of 8 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
visualize/src/model.rs	Refactored region creation using Into conversion from Rect.
visualize/Cargo.toml	Updated quadtree dependency to enable "nannou" feature and adjusted nannou/nannou_egui usage.
quadtree/src/region.rs	Added From/Into implementations between Region<2> and nannou::geom::Rect guarded by the nannou feature flag.
quadtree/src/quadtree.rs	Added conditional compilation for the regions() method using #[cfg(feature = "nannou")].
quadtree/Cargo.toml	Configured optional nannou dependency and added a feature flag for it.
README.md	Expanded documentation to include new feature details and its benefits for visualization.
Cargo.toml (workspace/root)	Added nannou and nannou_egui dependencies at the workspace level.