Configurable Firewall rules table columns

As an admin, I want to manage visible columns in the Firewall rules table, so that I can customize the table view to match my workflow.

Acceptance Criteria

* Allow users to show and hide columns in the Firewall rules table.
* Allow users to change the column order.
* Allow users to change the column sorting (on multiple columns with sorting order)
* User column preferences are persisted between sessions.
* The column management mechanism is implemented as a reusable solution that can be applied to other tables in the system.
* The table always preserves required system columns that cannot be hidden.