paginated api and pagination retrieval (cursor based)

[rtang03]

paginated api, e.g. getByEntityName resolvers

paginated info retrieval from Redis

Consider that Redisearch's command FT.SEARCH provide "LIMIT" and "SORTBY" flag. This is natively numbered-paged pagination. We shall adopt numbered-paged pagination, instead of cursor-based pagination, for the sake of simple simple implementation.

However, will concurrently explore the need and way to go for cursor-based pagination, or infinite scrolling.

[rtang03]

Now switch to cursor-based.