feat: Add logout for oidc (#2840)

* add oidc logout route, button in menu

* removed old comments

* use local storage to trigger signout in other tabs

* refactored to make use useEffect

* cleaned up comments

* fix remove event listener

* moved remove leftover storage variable to beginning of usemount

Co-authored-by: Michael Andersen <Michael.Andersen@rmp.uhn.ca>

platform/viewer/src/App.tsx

@@ -28,7 +28,6 @@ let commandsManager, extensionManager, servicesManager, hotkeysManager;
 
 function App({ config, defaultExtensions, defaultModes }) {
   const [init, setInit] = useState(null);
-
   useEffect(() => {
     const run = async () => {
       appInit(config, defaultExtensions, defaultModes)