Replaced tribal name makers with Rustican variants in Culture.xml and added leader title maker. Updated FCP_Wastelander_Factions.xml to use new world icons, adjusted settlement generation weight, added fixed and name makers, and removed genetic variance and goodwill fields. Added new world icon textures for Wasteland Settlers and Scavengers.
Introduces a new CultureDef for 'Wastelander' with associated naming conventions, allowed place tags, icon, and style item tags. This provides the foundation for post-apocalyptic survivor cultures in the mod.