Add getters to conflict avoidance.

src/belt_finding/conflict_avoidance.rs

@@ -93,6 +93,10 @@ impl ConflictAvoidance {
         }
     }
 
+    pub fn get_paths(&self) -> &[Vec<PathField>] {
+        &self.belts
+    }
+
     pub fn remove_conflict(&mut self) -> bool {
         let mut conflicts: Map<usize> = Map::new(self.map.width, self.map.height);