Add refresh script for Live data

[thijssnelleman]

Is your feature request related to a problem? Please describe.
I am using the library to represent my data as a table and it is periodically being refresh (live data). Currently I do not see a way to run a script in the background to refresh data. There are trigger based refreshes, but no interval refresh methods.

Describe the solution you'd like
Some kind of input script that allows me to refresh the data in the Window class.

Describe alternatives you've considered
I tried to see if I could set up some trigger automatically every few seconds, didn't work.

Is this feature present in other TUI products?
I do not think so, but if so please let me know

Additional context
My refresh script:

def refresh_data(self: ptg.Window) -> None: """Refresh the table.""" data_table = jobs_help.create_jobs_table(jobs, markup=True).splitlines() for iw, widget in enumerate(self._widgets): self._widgets[iw] = type(widget)(data_table[iw], onclick=cancel_jobs) self._widgets[iw].parent = self

So this is run after a ptg.Button trigger