feat(core): add elephant model family

Author: cantalupo555

packages/core/src/family.ts

@@ -387,6 +387,9 @@ export const ModelFamilyValues = [
 
   // Groq
   "groq",
+
+  // Elephant
+  "elephant",
 ] as const;
 
 export const ModelFamily = z.enum(ModelFamilyValues);