[lua, sql] Xarcabard NM Audits

[KiplingFFXI]

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?

Multiple NM audits for Xarcabard based on retail captures:

Biast (ID: 17235988)

• Adjusted level range.
• Adjusted HP.
• Added gil distribution based on retail capture and other videos.
• Adjusted terror additional effect rate based on retail capture and other videos.
• Added 2.0 weapon damage modifier based on retail captures.

Ereshkigal (ID: 17236059)

• Reorganized lua file to put immunities in appropriate place and clean up todo notes.
• Adjusted HP.

Shadow Eye (ID: 17236180)

• Adjusted subjob based on observed behavior.
• Adjusted HP.
• Added silence resistance rank based on testing and observed resist rates.

Steps to test these changes

!spawnmob any of the above IDs and witness the changes.