Fix clippy and enable clippy on CI

src/pipeline/debug_render_pipeline/debug_render_pipeline.rs

@@ -41,12 +41,17 @@ impl Default for DebugRenderMode {
     }
 }
 
+#[cfg(feature = "dim2")]
+type InstancesMap = HashMap<TypeId, Vec<Point<Real>>>;
+#[cfg(feature = "dim3")]
+type InstancesMap = HashMap<TypeId, (Vec<Point<Real>>, Vec<[u32; 2]>)>;
+
 /// Pipeline responsible for rendering the state of the physics engine for debugging purpose.
 pub struct DebugRenderPipeline {
     #[cfg(feature = "dim2")]
-    instances: HashMap<TypeId, Vec<Point<Real>>>,
+    instances: InstancesMap,
     #[cfg(feature = "dim3")]
-    instances: HashMap<TypeId, (Vec<Point<Real>>, Vec<[u32; 2]>)>,
+    instances: InstancesMap,
     /// The style used to compute the line colors for each element
     /// to render.
     pub style: DebugRenderStyle,