Add missing method.

app/Repositories/UserGroups/Currency/CurrencyRepositoryInterface.php

@@ -84,6 +84,13 @@ interface CurrencyRepositoryInterface
      */
     public function findByCode(string $currencyCode): ?TransactionCurrency;
 
+    /**
+     * @param string $name
+     *
+     * @return TransactionCurrency|null
+     */
+    public function findByName(string $name): ?TransactionCurrency;
+
     /**
      * Find by object, ID or code. Returns user default or system default.
      *