feat: licenses administration basic authentication.

feat: accounts slug.
feat: duplicate accounts_balance table and merge balance with accounts table.
feat: refactoring customers and vendors.
feat: system user soft deleting.
feat: preventing build tenant database without any subscription.
feat: remove 'password' property from 'req.user' object.
feat: refactoring JournalPoster class.
feat: delete duplicated directories and files.

server/src/services/Items/ItemsService.ts

@@ -67,4 +67,8 @@ export default class ItemsService {
     );
     return notFoundItemsIds;
   }
+
+  writeItemInventoryOpeningQuantity(tenantId: number, itemId: number, openingQuantity: number, averageCost: number) {
+    
+  }
 }