feat(data): add paywall payment APIs

src/data/repositories/index.ts

@@ -5,8 +5,10 @@
 export * from "./auth_repository";
 export * from "./chat_repository";
 export * from "./metrics_repository";
+export * from "./payment_repository";
 export * from "./user_repository";
 export * from "./interfaces/iauth_repository";
 export * from "./interfaces/ichat_repository";
 export * from "./interfaces/imetrics_repository";
+export * from "./interfaces/ipayment_repository";
 export * from "./interfaces/iuser_repository";