Implement simple pagination

app/Contracts/UserRepository.php

@@ -10,6 +10,8 @@ interface UserRepository
 
     public function getUserById($id): PromiseInterface;
 
+    public function paginateUsers(int $perPage, int $currentPage): PromiseInterface;
+
     public function getUserByToken(string $authToken): PromiseInterface;
 
     public function storeUser(array $data): PromiseInterface;