Loot Tweaks

[Rover656]

Description

• Stopped "Fixed" capacitor modifiers from being generated as loot.
• Fixed loot capacitors not storing stats on multiplayer (Breaking: old loot capacitors will reset).
• Loot capacitors have a small chance of generating with more than one modifier.

Now includes near enough similar chest loot entries for the overworld, will need another pass when we have more content, but its enough to keep us going.

Todo

• Confirm loot changes
• Add other loot entries
• Spawn loot in more places

Closes #238

Checklist:

• My code follows the style guidelines of this project (.editorconfig, most IDEs will use this for you)
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation

[Rover656]

Also going to look at adding the other missing loot tables entries from 1.12.2