Add criterion benchmark

src/graph/wheighted_graph/shortest_path.rs

@@ -119,12 +119,12 @@ where
 
 #[cfg(test)]
 mod test {
+
     use crate::{
-        belt_finding::QueueObject,
         graph::wheighted_graph::{
             adjacency_list::WheightedAdjacencyList, shortest_path::dijkstra, WheightedGraph,
         },
-        priority_queue::{BinaryHeap, PriorityQueue},
+        priority_queue::BinaryHeap,
     };
 
     #[test]