Add command to add / remove ignored entries from the ska named config

[gchiesa]

Description

The used currently has no automation to add/list/delete entries from the ska named config. The UX should allow to perform this functionality via ska cli (or library).

Use Case

I want to add an entry to the relevand named config. I can edit the file directly but it would be nicer to be able to add it via the following command:

• ska config add-ignore

ska config add-ignore --path ./outputFolder --name namedConfig IGNORE_ENTRY

• ska config list-ignore

ska config list-ignore  --path ./outputFolder --name namedConfig 

• ska config delete-ignore

ska config delete-ignore  --path ./outputFolder --name namedConfig