Add sampling logic and DuplicateSlotRepairStatus module (#18721)

gossip/benches/weighted_shuffle.rs

@@ -21,7 +21,7 @@ fn bench_weighted_shuffle_old(bencher: &mut Bencher) {
     let weights = make_weights(&mut rng);
     bencher.iter(|| {
         rng.fill(&mut seed[..]);
-        weighted_shuffle(&weights, seed);
+        weighted_shuffle::<u64, &u64, std::slice::Iter<'_, u64>>(weights.iter(), seed);
     });
 }