Magiclysm additions: Goblins, Gear mods and Dragonbone!

[RobbieNeko]

Summary

SUMMARY: Mods "Added Goblins, Dragonbone weapons, and armor mods"

Purpose of change

I promised the next proper update would be additions, and so I shall deliver!

In all seriousness, the sprites for goblins were already in the tileset, along with their camp, and thus it only felt right to add them. (Plus, the DDA version has them). Goblin camps can now serve as a more early-game challenge / area to raid for some basic loot.
The armor mods currently added are Owlbear Fur and Demon Chitin, with Black Dragonhide / scales coming later. Owlbear fur is essentially purely for warmth, whereas Demon Chitin adds a boatload of fire protection and a decent amount of cut and ballistic protection (but no bash). Later, I plan to add proper owlbear fur clothing.
Dragonbone weapons! Not only are they even better than Orichalcum, but they might just be able to be improved using certain other methods later on ;P
Also added a tile for the wizard tower, because previously it defaulted to the generic city building and thus was indistinguishable at a glance from any normal city building.

Describe the solution

• Adds goblin warriors, slingers, and chieftains. The warriors wield cudgels, the slingers wield slings, and the chieftains wield +1 weapons.
• Adds goblin camps for the goblins to spawn in (with variants of the camps on the way in the future). The chieftain's room contains the magic-related loot.
• Adds owlbear fur and uses it for a clothing mod via the tailoring kit
• Adds a demon chitin clothing mod to the tailoring kit
• Adds 4 dragonbone weapons: A battleaxe, a longsword, a qiang, and a tachi (stats based on katana). Currently the material is just set to bone, and I'm well aware of the fact that is probably makes them rather easy to repair. Not a big issue, given how difficult they should be to obtain.
• Adds a wizard tower tile of my own design.

Describe alternatives you've considered

• Just directly porting stuff from the DDA version
  No thanks, I wanted these initial additions at least to be primarily my own work.

Testing

Tested throughout to make sure the game doesn't implode. It doesn't (at least not on load)

Additional context

My apologies to the autofix bot in advance, I really should have kept proper track of my changes so that I could lint it myself. I shall endeavor to do better in the future.
Goblin stats based on those found in the DDA version of the mod.

[RobbieNeko]

Ahhh, good ol' SDL erroring

[chaosvolt]

Ported changes over to test release and loaded up, seems good.