bug#51454: Progress bar in Org source blocks

[excalamus]

>  are you asking to be able to turn off all the progress-bars?
>
Okay, I see the confusion. No, I'm not looking to remove the progress bars, but 
instead have them display as much like the guix command output would look after 
execution completes in a standard terminal. At this point that probably means 
replace ^H with something like space, ^M with something like \n, etc.
>  I am sure one could come with more complex filters for formatting adequately.
>
That's my goal after having talked with you. :) Thank you for your time and 
help.