Add boxel consolidate-workspaces command (CS-10632)#4780

FadhlanR wants to merge 2 commits into

maincardstack/boxel:mainfrom

cs-10632-reimplement-boxel-consolidate-workspaces-commandcardstack/boxel:cs-10632-reimplement-boxel-consolidate-workspaces-commandCopy head branch name to clipboard