Add the get_operation_status function to the Storage struct

This patch adds support for the NK_get_progress_bar_value function:  It
adds the OperationStatus enum that stores the return value of this
command and adds the get_operation_status function to the Storage struct
that executes the command.

1 files changed, 0 insertions, 1 deletions

diff --git a/TODO.md b/TODO.md
index 79a68e4..8f9b898 100644
--- a/TODO.md
+++ b/TODO.md
@@ -5,7 +5,6 @@ SPDX-License-Identifier: CC0-1.0
 
 - Add support for the currently unsupported commands:
     - `NK_fill_SD_card_with_random_data`
-    - `NK_get_progress_bar_value`
 - Clear passwords from memory.
 - Lock password safe in `PasswordSafe::drop()` (see [nitrokey-storage-firmware
   issue 65][]).