Tabbing on ChromeOS is not working

[roughike]

From #74:

Tabbing does not work. This is really important. For example the Google Play store on ChromeOS allows you to use TAB key to jump down and across lists, and then ESC to back up out of lists or all the way backwards in navigation. It makes it much more usable.

I reported this a low priority issue, since I expect that not a lot of people will use inKino with ChromeOS. If an end user reports the same issue, I'll raise the priority and look into it sooner.

[ghost]

Its not just for ChromeOS.

The exact same thing is needed on mobiles too for Forms and many have raised it in the issue.
The issues show how to do it easily. Its a work-around until Flutter does it automagically apparently.

flutter/flutter#11344

flutter/flutter#10372

Hope this helps