Not sure if it's been done yet, but my old, ('96), JVC video, (VHS-C tape), recorder has one. It was an optional extra that I bought & can make multiple timed exposures indefinitely or 'stop animation'.
I used it to take 1 sec exposures at 30 sec intervals of the total lunar eclipse back in '2000'. Managed to get 3 hrs out of an externally connected 7 A/H battery before it died.
They should be avail for these new fangled cameras. Might cost a few quid tho!
L.