feat: add custom sorting for all major entities

Add sort_order column to pokemon, items, recipes, habitats, and configs
Implement drag-and-drop reordering in the admin interface
Update API endpoints and database queries to respect the new sort order

frontend/src/views/RecipeList.vue

@@ -32,7 +32,8 @@ const itemQuery = computed(() => ({
   search: search.value,
   categoryId: categoryId.value,
   usageId: usageId.value,
-  tagIds: tagIds.value.join(',')
+  tagIds: tagIds.value.join(','),
+  recipeOrder: 1
 }));
 
 function recipeTarget(item: Item) {