Loading state for panel.html

When opening the devtools for the first time there’s a flash of unstyled content.

It’s probably something we can deal with with x-cloak + a “Loading…” message that gets hidden on Alpine.js bootstrap.

cc @stephenoldham might have an idea of how to tackle this.

See the following gif:

[ryangjchandler]

@stephenoldham Very nice!

[ryangjchandler]

That would be great @stephenoldham

I think the quickest win would be x-cloak on the panel component + a loading spinner/message with x-show="false" (so it disappears on Alpine load)

I think a Loading… message should be good enough. No need for spinners in my opinion 😃