lang-khk and lang-fao

These are ecosystem siblings, as both `giellalt/lang-khk` and `giellalt/lang-fao` are distinct finite-state and Constraint Grammar-based language resources developed by the same organization (`giellalt`) for different specific languages (Halh Mongolian and Faroese, respectively), indicating a shared architectural approach applied to diverse linguistic targets rather than competitive or complementary functionality for a single language.