Describe the bug

The cluster selector button UX is such that the button may not be as used as it could. It's placed away from where there's a reference to the cluster name (cluster name on the left in the sidebar, cluster selection button on the top right) and with the recent theme changes, it looks rather dull and unnoticeable.

We need to find a way to make the cluster selector button more highlighted, relocate it, integrate it into the search bar, or some other solution. Maybe it's not even needed now that we have the search bar and the home view.

Current way:

Environment (please provide info about your environment):

• Installation type: any
• Headlamp Version: main branch