Added a new field template_category_id to the inventory_template_items table.
Included a new parameter template_category_id in the Postman collection for the create and update APIs.
Ensured that when a template is deleted, its items and the associated template category are also deleted.
Successfully tested the Template Categories API on the live URL.
Completed CRUD operations for template categories and their mapping with template items. Discard unused code and formatting code.