Refactor TDLib facade and local time handling

tests/delete_message.rs

@@ -96,12 +96,12 @@ async fn test_can_only_delete_own_messages_for_all() {
 
     // Проверяем флаги удаления
     let messages = client.get_messages(123);
-    assert_eq!(messages[0].can_be_deleted_for_all_users(), true); // Наше
-    assert_eq!(messages[1].can_be_deleted_for_all_users(), false); // Чужое
+    assert!(messages[0].can_be_deleted_for_all_users()); // Наше
+    assert!(!messages[1].can_be_deleted_for_all_users()); // Чужое
 
     // Оба можно удалить для себя
-    assert_eq!(messages[0].can_be_deleted_only_for_self(), true);
-    assert_eq!(messages[1].can_be_deleted_only_for_self(), true);
+    assert!(messages[0].can_be_deleted_only_for_self());
+    assert!(messages[1].can_be_deleted_only_for_self());
 }
 
 /// Test: Удаление несуществующего сообщения (ничего не происходит)