printedparts: Parts Kiosk link in the sidebar Displays section

Beside Shopfloor Dashboard and TV Slideshow, opening in a new tab and
shown only while the plugin is enabled - kiosk-style pages get
launched from the Displays group, not the Information nav.

frontend/src/views/AppLayout.vue

@@ -27,6 +27,8 @@
         <div class="nav-section">Displays</div>
         <a :href="withBase('/shopfloor')" target="_blank" class="external-link">Shopfloor Dashboard</a>
         <a :href="withBase('/tv')" target="_blank" class="external-link">TV Slideshow</a>
+        <a v-if="isPluginEnabled('printedparts')" :href="withBase('/parts-kiosk')"
+           target="_blank" class="external-link">Parts Kiosk</a>
 
         <router-link v-if="authStore.isAdmin" to="/settings">Settings</router-link>
       </nav>
@@ -108,6 +110,7 @@ import { currentTheme, toggleTheme } from '../stores/theme'
 import { dashboardApi, notificationsApi } from '../api'
 import { getFacilityName, getSiteLogo, getServicenowUrls } from '../utils/siteSettings'
 import { withBase } from '../utils/basePath'
+import { isPluginEnabled } from '../composables/enabledPlugins'
 
 const router = useRouter()
 const route = useRoute()