feat(ui) : add tabs to piece and product detail pages

frontend/app/pages/product/[id]/index.vue

@@ -347,7 +347,7 @@
 
 <script setup lang="ts">
 import { computed, onMounted, reactive, ref, watch } from 'vue'
-import { useRoute, useRouter, navigateTo } from '#imports'
+import { navigateTo, useRoute } from '#imports'
 import ConstructeurSelect from '~/components/ConstructeurSelect.vue'
 import DocumentUpload from '~/components/DocumentUpload.vue'
 import DocumentPreviewModal from '~/components/DocumentPreviewModal.vue'
@@ -369,7 +369,6 @@ import { useCustomFieldInputs, type CustomFieldEntityType } from '~/composables/
 
 const { canEdit } = usePermissions()
 const route = useRoute()
-const router = useRouter()
 const toast = useToast()
 const { getProduct, updateProduct } = useProducts()
 const {