(umbrella) Support AKS arc clusters, bare metal

The problem currently is AKS desktop (and headlamp) do not support AKS Arc/local/edge clusters. This is because they require a proxy to be running to connect to them. Also there's a separate command to get their credentials.

- Getting started: jumpstart can install it on an azure VM https://github.com/Azure/aksArc/tree/main/aksarc_jumpstart
- "labs" can be setup by someone for us perhaps. But the above jumpstart works.

Commands:
- Can not connect to it except through local network with: "az aksarc get-credentials"
- Can proxy into it with "az connectedk8s proxy"

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- A UI / UX for managing proxies
- Add ability to detect aksarc/etc clusters and grab their credentials with a different command

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