Use Java 17 features (#6691)

Uses enhanced instanceof (and simplify equals methods)
Uses switch expressions and arrow labels
Seal and finalize some Shuffleboard classes

Co-authored-by: Sam Carlberg <sam@slfc.dev>

wpimath/src/main/java/edu/wpi/first/math/Pair.java

@@ -74,11 +74,9 @@ public class Pair<A, B> {
     if (obj == this) {
       return true;
     }
-    if (obj instanceof Pair) {
-      return Objects.equals(m_first, ((Pair) obj).getFirst())
-          && Objects.equals(m_second, ((Pair) obj).getSecond());
-    }
-    return false;
+    return obj instanceof Pair<?, ?> other
+        && Objects.equals(m_first, other.getFirst())
+        && Objects.equals(m_second, other.getSecond());
   }
 
   @Override