drupal_get_path() function is not supported in drupal 10

Using the extension.list.theme service instead of drupal_get_path now. Please review.

I have fixed this issue by using the Drupal services.

\Drupal::service('extension.list.theme')->getPath('status_zymphonies_theme') . theme_get_setting('slide_image_path_' . $i, 'status_zymphonies_theme');

Hi sidharth_soman i have tested the patch provided above #2 is fixed the drupal_get_path() Error so moving this issue to RTBC