[Feature] Implementation of the missing Aht Urhgan Assault Missions

[gokudr]

I affirm:

• I understand that if I do not agree to the following points by completing the checkboxes my issue will be ignored.
• I have read and understood the Contributing Guide and the Code of Conduct.
• I have searched existing issues to see if the issue has already been opened, and I have checked the commit log to see if the issue has been resolved since my server was last updated.

Describe the feature

I would like to request the implementation of the remaining missing Treasures of Aht Urhgan Assault Missions.
Currently, the server only has a small handful of Assaults fully implemented and migrated to the modern xi.assault container system (such as Excavation Duty, Imperial Agent Rescue, and Leujaoam Cleansing). The vast majority of the 50 original Assault instances are entirely missing.
Because these instances are missing, players are unable to naturally progress their Mercenary Ranks, earn staging-point specific Assault Points, obtain Assault gear rewards, or complete the Mythic Weapon questline requirements without relying on custom scripts or GM commands to bypass them.
What is needed:

• Creation of the .lua instances and objective logic for the missing missions across all 5 staging points (Leujaoam Log, Mamool Ja Training Grounds, Lebros Cavern, Periqia, Ilrusi Atoll).
• Populating the database with the proper mobs, NPCs, and spawn points for these missing instances.
• Hooking up the win/loss conditions, time limits, and Rune of Release spawning.
  Reference Information:
• BG-Wiki Assault Guide & Mission List: https://www.bg-wiki.com/ffxi/Category:Assault