Add a global New workspace picker (#1324)

* Add global New workspace project picker

* Clean up New workspace picker state

packages/app/src/utils/sidebar-shortcuts.test.ts

@@ -46,6 +46,7 @@ function project(projectKey: string, workspaces: SidebarWorkspaceEntry[]): Sideb
     projectName: projectKey,
     projectKind: "git",
     iconWorkingDir: workspaces[0]?.workspaceDirectory ?? "",
+    canCreateWorktree: true,
     workspaces,
   };
 }