Skip Shadowlands (No Chilling Summons)

I have added a slash command interface for this addon. The default values are:

Block "A Chilling Summons" quest = true
Block Talking Heads = true
Block "A Chilling Summons" talking head text = true
No Chilling Summons addon enabled = true

These settings can be changes with the following commands in-game:

-Type '/NCS Default' to set to default.
-Type '/NCS Shadowlands' to toggle the 'No Chilling Summons' blocker off and on.
-Type '/NCS Head' to toggle the talking heads blocker off and on.
-Type '/NCS Text' to toggle Morgraine's talking head text off and on.
-Type '/NCS Off' to turn off the addon.
-Type '/NCS On' to turn on the addon.

Also:

-Type '/NCS Help' to display these commands
-Type '/NCS' to display current settings

These settings will persist from session to session.