Feature: Accessible breadcrumbs

[jaller94]

Is your feature request related to a problem? Please describe.
I'm always frustrated when I can't click Breadcrumbs in Files with the middle mouse to open the link in a new tab.
The links are also missing right click, long touch options and keyboard accessibility, because the node only gets an onclick handler.

Describe the solution you'd like
The href attribute applied to both link tags in Breadcrumbs.jsx.
https://github.com/ipfs-shipyard/ipfs-webui/blob/216e574b92711b168953dd0ed566c48424d9320e/src/files/breadcrumbs/Breadcrumbs.js#L68-L70
https://github.com/ipfs-shipyard/ipfs-webui/blob/216e574b92711b168953dd0ed566c48424d9320e/src/files/breadcrumbs/Breadcrumbs.js#L88-L93

Describe alternatives you've considered
Technically there are no alternatives to provide full accessibility of links.
The best solution for a single-side webapp is to not have click listeners on links, but to listen for window.onhashchange, then call event.preventDefault to stop the browser from navigating and process the new route with the internal router.

Additional context
There are more accessibility issues like this in most parts of the app.

[jessicaschilling]

Hi @jaller94 -- apologies for the delay in response, and thank you for your detailed and specific feedback. We have a larger accessibility meta-issue in ipfs/ipfs-gui#28 in which we're gathering specifics for a more involved accessibility review, hopefully soon, so I've linked to your issue there as a point of reference.

For the sake of grouping similar topical issues in one place, I'll close this issue for now -- however, if you are at all inclined to make a PR on the suggestions you note above, that would be more than welcome! Thanks again.