PLEASE NOTE THAT THIS DIFF AND SUBSEQUENT DIFFS IN THIS STACK WILL NOT BE LANDED UNTIL MORE OF THE REDESIGN IS READY SINCE THIS WILL CAUSE REGRESSIONS IN PROD
This diff introduces the keyserver selection list panel and makes various UI changes to the KeyserverSelectionList so that it can be housed within the keyserver selection list panel
For context here is what the figma designs look like:
Linear task: https://linear.app/comm/issue/ENG-5961/new-keyserver-selection-ui