Extract struct for return value of getTransactionsForAccount

http/account.go

@@ -28,8 +28,10 @@ func (h *Handler) transactionsForAccount(c *gin.Context) {
 		return
 	}
 
-	c.JSON(http.StatusOK, struct {
+	c.JSON(http.StatusOK, TransactionsResponse{account, transactions})
+}
+
+type TransactionsResponse struct {
 	Account      postgres.Account
 	Transactions []postgres.GetTransactionsForAccountRow
-	}{account, transactions})
 }