feat(payment): expand Stripe methods and checkout handoff

src/data/schemas/auth/index.ts

@@ -3,6 +3,7 @@
  */
 
 export * from "./facebook_user_data";
+export * from "./checkout_handoff";
 export * from "./login_status";
 export * from "./request/facebook_identity_request";
 export * from "./request/facebook_login_request";