Add example for bounding volumes and intersection tests (bevyengine#1…

…1666)

# Objective

- Create an example for bounding volumes and intersection tests

## Solution

- Add an example with a few bounding volumes, created from primitives
- Allow the user to cycle trough the different intersection tests

Cargo.toml

@@ -528,6 +528,17 @@ description = "Shows how to create graphics that snap to the pixel grid by rende
 category = "2D Rendering"
 wasm = true
 
+[[example]]
+name = "bounding_2d"
+path = "examples/2d/bounding_2d.rs"
+doc-scrape-examples = true
+
+[package.metadata.example.bounding_2d]
+name = "2D Bounding Volume Intersections"
+description = "Showcases bounding volumes and intersection tests"
+category = "2D Rendering"
+wasm = true
+
 # 3D Rendering
 [[example]]
 name = "3d_scene"