[PUI] Error pages (#7554)

* Add <PermissionDenied /> page

* Check permissions for admin center

* Wrap <PartDetail> page in an error handler

- Display client or server errors

* Add error handlers to other detail pages

* Refactor error pages

* Add playwright tests

* Refactor component locations

* Get test to work

src/frontend/tests/pui_basic.spec.ts

@@ -54,4 +54,5 @@ test('PUI - Quick Login Test', async ({ page }) => {
   // Logout (via URL)
   await page.goto(`${baseUrl}/logout/`);
   await page.waitForURL('**/platform/login');
+  await page.getByLabel('username');
 });