Fix a lot of the analyzer warnings too

MareSynchronos/Utils/RollingList.cs

@@ -4,7 +4,7 @@ namespace MareSynchronos.Utils;
 
 public class RollingList<T> : IEnumerable<T>
 {
-    private readonly object _addLock = new();
+    private readonly Lock _addLock = new();
     private readonly LinkedList<T> _list = new();
 
     public RollingList(int maximumCount)