Would be convenient for the user to provide a cluster alias for the dashboard link

My current workflow involves somewhat regularly starting a new dask cluster via dask-gateway. I'm finding that I then need to copy paste the URL of that cluster into a few new windows so I can watch the task graph / status / workers / etc. It would be convenient if I could provide a cluster alias when starting the cluster so that instead of needing to copy/paste the url into a few new windows, I can just refresh the existing browser windows (or maybe they'd just refresh automatically? idk) when I need to create a new cluster
So, for example, when I start a cluster I'm handed a UUID like `addcbd20eea44364a9484a89a67dc2da` which means the status endpoint is:

`http:///gateway/clusters/addcbd20eea44364a9484a89a67dc2da/status`

If, when creating the cluster (or i guess at any point down the line, really) I could also provide a kwarg `alias='my_alias'` then I could reference that cluster via

`http:///gateway/clusters/my_alias/status`

I'd say this can be filed under "minor usability tweaks" (i.e., not super high priority)