Page with APIs in an API group

[jboxman]

Similar to the OpenShift docs, add a group overview page for each API group. This could be useful, because it makes it easy to see at a glance what APIs a particular API group offers. In particular, after installing a new Operator, this makes exploring what APIs it offers easy.

This will require new routes. The navigation section might include a choice between this list and a list of API groups. But this probably should be a separate route in the spirit of Remix. The final structure might be:

/ (APIs)
/groups (All groups)
/[group]/[version] (Specific API group)

Although this might break having / be all the APIs. Perhaps the root URL would always redirect to /apis or some other endpoint.