Enhance show deletion functionality to support media removal option

Updated the DeleteShowCommand and its handler to include an optional parameter for media deletion, allowing users to remove associated media files when deleting a show. Refactored related components and API calls to accommodate this new feature, ensuring a seamless user experience. Additionally, updated localization strings to reflect the new functionality and adjusted tests to verify the correct behavior of the deletion process with and without media.

backend/src/TeleWave.Api/Endpoints/ShowEndpoints.cs

@@ -144,13 +144,15 @@ public static class ShowEndpoints
         return result.ToHttpResult();
     }
 
+    /// <param name="withMedia">Снести заодно файлы шоу — иначе они останутся осиротевшими.</param>
     private static async Task<IResult> DeleteShow(
         Guid id,
         ISender sender,
-        CancellationToken cancellationToken
+        CancellationToken cancellationToken,
+        bool withMedia = false
     )
     {
-        var result = await sender.Send(new DeleteShowCommand(id), cancellationToken);
+        var result = await sender.Send(new DeleteShowCommand(id, withMedia), cancellationToken);
         return result.ToHttpResult();
     }