temp: provide a handler to logout

src/main.ts

@@ -96,7 +96,10 @@ export class DevStarExtension {
     context.subscriptions.push(
       vscode.commands.registerCommand('devstar.showHome', (url: string) =>
         this.dsHome.toggle(url)
-      )
+      ),
+      vscode.commands.registerCommand('devstar.logout', () => {
+        this.user.logout()
+      })
     );
   }
 }