CAKE-15 | created header row, transaction page, balance view model, formatted item list, wallet balance; applied new design to trade and transaction rows; applied transaction page to dashboard page; applied balance view model, trade store, trade filter store and transaction filter store to dashboard view model; changed trade list item and transaction list item

lib/src/domain/common/transaction_info.dart

@@ -8,4 +8,5 @@ abstract class TransactionInfo extends Object {
   int height;
   String amountFormatted();
   String fiatAmount();
+  void changeFiatAmount(String amount);
 }