[lua] [sql] Ouryu Cometh

[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?

Refactors Ouryu in the battlefield Ouryu Cometh

• Updated and cleaned up Mistmelt logic
• Moved skill and spell list into lua
• Cleaned up onMobFight logic to be cleaner & easier to read
• Corrected add spawning behavior with captures from retail
• Corrected issues with mob roaming behavior and disabled elementals from dropping clusters
• Corrects two incorrect skill names and has Ouryu use the correct skill IDs

Captures

https://youtu.be/wx3OHEBU2C8
ouryu_cometh_2025-12-31_1_48.zip
OuryuRespawns_2026-4-9_15_24.zip

Steps to test these changes

Go to Riverne A
!pos 184 0 344 30
Run Ouryu Cometh @ the displacement