feat: add functional authentication

spec/schemas/name.ts

@@ -0,0 +1,8 @@
+import { z } from "zod";
+
+export const NameSchema = z.object({
+  family: z.string().nullable().describe("Family name, also known as last name or surname."),
+  given: z.string().nullable().describe("Given name, also known as first name."),
+});
+
+export type Name = z.infer<typeof NameSchema>;