[core][lua][sql] Movalpolis Patrols and Guards

[UmeboshiXI]

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?

1. Implements Moblin patrols and Bugbear guard behavior.
2. Adds support for adjustable spacing between leaders and followers with FOLLOW_LEASH_RANGE and FOLLOW_STOP_RANGE mob mods.

Bugbears

• Some bugbears stand guard the paths leading deeper into Movalpolis. They do not roam.

Moblin Patrols

• In Oldton, there are two types of patrols
  -- The first is a Moblin leader and a Bugbear follower.
  -- The second is a Goblin Freelance with 3 Moblin followers.

• In Newton there are only patrols.
  -- In this case there is a Goblin Swordsman with 2 Moblin followers.

• The follower mobs do not superlink like BST pets but they will often link normally since they usually end up facing their leader after pathing.

• The followers do NOT respawn if killed until the leader respawns.

• When the leader dies, any followers not in combat despawn shortly after.

• When the leader respawns, all followers respawn with it.

https://www.youtube.com/watch?v=3vfUNX5EB7w

I got the pathing/mob spacing as close as I could. It won't completely replicate retail do to path node vs our navmesh(The followers will sometimes path in weird directions before leashing back to their master on retail), but it does closely replicate their normal pathing.

Steps to test these changes

Go into mob_spawn_points.sql and search for Goblin_Freelance and Goblin_Swordsman. These are the patrol leaders in their respective zones. Use !gotoid to teleport to them and see that they are functioning as expected.

The various bugbears that act as guards in Oldton should not move.

Use !pos -224 8 22 11 to teleport to Oldton. There should be two bugbears here that are following a Goblin Hammerman and a Moblin Chapman.