cargo: gate motion sim behind feature flag

src/tasks/simulation.rs

@@ -1,8 +1,7 @@
-
 use embassy_sync::channel::DynamicSender;
-use csv_core::{ReadFieldResult, Reader};
 use embassy_time::{Duration, Timer};
 use nalgebra::{Vector2, Vector3};
+use csv_core::{ReadFieldResult, Reader};
 
 use crate::events::Measurement;