Method: Enqueue required script
Method: Register Categories options
Filter Hook: Filter is called before registering question_category taxonomy.
Filter Hook: FILTER: ap_question_category_labels Filter ic called before registering question_category taxonomy
Method: Register category taxonomy for question cpt.
Filter Hook: Filter applied before getting categories.
Method: Categories page layout
Action Hook: This action can be used to show custom message before category page.
Method: Category page layout.
Method: Include required files