Overload getAllSortedFiatCurrencies() with Comparator param

The default method sorts by currency name, in come cases we need to
sort by currency code, e.g., swift accounts.  This method allows
sorting by either.

core/src/main/java/bisq/core/locale/CurrencyUtil.java

@@ -82,7 +82,13 @@ public class CurrencyUtil {
     }
 
     public static Collection<FiatCurrency> getAllSortedFiatCurrencies() {
-        return fiatCurrencyMapSupplier.get().values();
+        return fiatCurrencyMapSupplier.get().values();  // sorted by currency name
+    }
+
+    public static Collection<FiatCurrency> getAllSortedFiatCurrencies(Comparator comparator) {
+        return (List<FiatCurrency>) getAllSortedFiatCurrencies().stream()
+                .sorted(comparator)                     // sorted by comparator param
+                .collect(Collectors.toList());
     }
 
     private static Map<String, FiatCurrency> createFiatCurrencyMap() {