4 more backstories added and some category typos fixed.

Kriegsman backstory is now in the proper category.

Added 6 more backstories and fixed some issues with RimDark compatibility.

Added 15 new backstories for different categories.
Fixed typos in 2 existing backstories.

Add proper MayRequire tags for Biotech on traits from that expansion.

Relabelled all defnames for more robust code and to avoid errors. Apologies but this isn't compatible with existing saves due to the change - they will be playable but existing backstories will be re-assigned at random and change pawn traits.

No longer gives errors if not using the RimDark mod or the Biotech and Anomaly expansions.

Changed Voidborn trait to Voidhand to better represent that it's a habit and not a genetic thing.

Tweaks for child backstories and space refugee pawns.

Typo fix.