Extension for keyboard shorcuts to manage split tab

[u/josemarsotelo]

Regarding the relatively new split tabs feature, do you know if there is any extension that allows for keyboard shortcuts to resize the split screen distribution between tabs, to fixed proportions like 30:70, 50:50, 70:30 or such (even better if you can customize the proportions).

I've been looking around but found nothing :/ the follow up question is if you have an educated feeling for how doable would it be to create such extension? I was about to try but a quick look into it made me think it is not possible since Chrome Extension API seems to not facilitate handlers for the "resizing bar" that splits the vew for the tabs.

Thanks a lot!