docs: Faction Lore Update

[KheirFerrum]

Purpose of change

Updates the lore based on further posts/discussions on the Discord.

Describe the solution

Updates it. Namely the non-human faction lore. Old Guard will follow in a bit.

Describe alternatives you've considered

Write a novel.

Testing

...

Additional context

Preliminary and framework, not actual content. Make sure this is known.

Do we want a larger issue put up to track progress on this? Something like

• Non-Human
• Human
  • Old Guard
  • Commune
  • etc.

Checklist

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[chaosvolt]

Is a lot to go over but far as I can tell all looks good so far, can always add more, figure out what the NPC faction docs are in a different area and not in this documentation, etc.