Feat: flush the output to the buffer

[cinghiopinghio]

Is your feature request related to a problem? Please describe.

Sometime, when waiting for long tasks, I use to print to screen the progress (maybe using something like tqdm). SnipRun, on the other hand print to screen only after the task has finished.

Describe the solution you'd like

Is it possible to flush the output of the task to screen with a certain frequency, while waiting for the outcome?

Describe alternatives you've considered

I haven't found any workaround.