[Feature] Improve accessibility of the devtools

[Svish]

Would be great if the devtools was more accessible. See for example the sad accessibility tree when I select the collapse button:

The toggle button, should have an aria-label and be linked to the panel via aria-controls, aria-haspopup and aria-expanded.

The panel itself should be an <aside> and also have a descriptive name via aria-label.

The buttons inside the panel and such could probably be improved too, but at least the above should make the devtools itself more "visible" in the accessibility tree.

[bluebill1049]

Valid for the feedback itself. It's an open-source project if you have a strong opinion (a valid one) about things you can contribute and send us a PR. Rolling face around doesn't add any value to the project and shows any thought of appreciation toward people using their free time on the project like myself.

So conclusion: Feel free to send a PR to improve on the accesiblity. thanks

[Svish]

Sorry, wasn't aware the 🙃 smiley was considered offensive or ungrateful, I just wanted to be nice. Removed it now.

[bluebill1049]

all good. It's a contextual thing, like I said it's valid feedback in general.

[mgifford]

So what is being done to make the devtools more accessible?