Rework grid for A11Y

[mdirolf]

We should probably only capture the keyboard on the grid rather than the whole page. And add textarea role to the grid cells. Remove the eslint ignore comment from Cell.tsx

[mdirolf]

Also Remove ESLint ignore in ClueList and use buttons instead of <li>s

[mdirolf]

Basically re-evaluate any eslint-disable comments

[mdirolf]

Is there a possibility of using the default keyboard for input instead of our own?

[mdirolf]

I think we can make improvements here but going to let them be done as specific issues