[Quest] Promotion Sergeant Major

[KnowOne134]

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 full quest TOAU Promotion: Sergeant Major
https://ffxiclopedia.fandom.com/wiki/Promotion:_Sergeant_Major
https://youtu.be/6XuI3mFLw5E Part 1
https://youtu.be/M44kQ6KMqlY Part 2

Steps to test these changes

Complete all other quests in series
!completequest 6 90
!completequest 6 91
!completequest 6 92
!completequest 6 93
!completequest 6 94
!setplayervar AssaultPromotion 25
-- Naja Salaheem !pos 26 -8 -45.5 50