budget mockup, account settings & transactions filter

lib/domains/transaction/transaction_event.dart

@@ -71,4 +71,10 @@ final class TransactionSetCurrent extends TransactionEvent {
 
 final class TransactionDeleteCurrent extends TransactionEvent {
   const TransactionDeleteCurrent();
+}
+
+final class TransactionFilterCategory extends TransactionEvent {
+  final Category? category;
+
+  const TransactionFilterCategory(this.category);
 }