[lua] [sql] [yaml] Implement Assault "Requiem" + Add support for missing Assault Armband KI Msg

[Skold177]

I affirm:

• I understand that if I do not agree to the following points by completing the checkboxes my PR will be ignored.
• I understand I should leave resolving conversations to the LandSandBoat team so that reviewers won't miss what was said.
• I have read and understood the Contributing Guide and the Code of Conduct.
• I have tested my code and the things my code has changed since the last commit in the PR and will test after any later commits.

What does this pull request do?

• Adds the Assault "Requiem" - The objective in this assault is to kill all 18 undead enemies present. Pets are not required.

• Enemy spell lists are static and do not scale with level. This means the level 50 version will have level 75 spells. Enjoy getting nuked with Blizzaga III!

• All enemies seems to have a slight HPP reduction and a sizable attack bonus, but no bonus weapon damage besides the amount given to ToAU enemies.

• Updated delays / skill lists in both YAML and SQL

• Corrected spawn points, level ranges, NPC Door states etc.

• Also added support for the "You are not in possession of an Assault Armband. Unable to enter area." message that you get if you try to enter an assault without one, before you got "Nothing happens."

Captures (Quite a lot of them)

Assault_Requiem.zip

Steps to test these changes

Be Assault Rank 2, pick up "Requiem" , try to enter with an armband, check out the new message.
Pick up an armband, enter the assault, kill all 18 undead to win.

Can also just !instance 5602 in town