Major overhaul of the ghoul system: removed legacy component-based ghoul logic and replaced it with a gene-based system. Added new gene classes for ferality, ghoul body, skin, glowing one, and toxic healing, along with associated hediffs and Harmony patches. Updated XML defs and project files to support the new system, and removed obsolete code and solution files. This refactor centralizes ghoul behavior, transformation, and ferality progression under the new gene architecture.
