Resolve raw type warnings (#1516)

Also very small optimization to hopper counters and removal of redundant casts in `PerimeterDiagnostics`

src/main/java/carpet/script/value/ValueConversions.java

@@ -274,7 +274,7 @@ public class ValueConversions
         }
         if (v instanceof Set)
         {
-            v = new ArrayList(((Set) v));
+            v = new ArrayList<>(((Set<?>) v));
         }
         if (v instanceof List<?> l)
         {