Remote loading state for Explorer view

Remote loading can take some time to show files. Meanwhile explorer is usually visible, but a empty while loading, with the usual minimal loading indicator. It would be nice if this space could be used for showing remote loading state with more details. <img width="300" alt="image" src="https://user-images.githubusercontent.com/8599/204070540-6d58d84d-561d-4b4c-92c2-2e2306133820.png"> <img width="300" alt="image" src="https://user-images.githubusercontent.com/8599/204071181-44c13b12-9224-4909-a1ad-a7efefa99839.png">