feat: pagination

[rodrigopavezi]

Fixes#1382

Add pagination all the way from the request-client to the request-node and subgraph queries.

Summary by CodeRabbit

Release Notes

• New Features

  • Enhanced pagination capabilities for retrieving channels and requests by topic, allowing users to specify the number of results per page and the page number.
  • Updated multiple methods across the application to support pagination, improving data retrieval efficiency.

• Bug Fixes

  • Retained existing error handling and control flow, ensuring stability in the updated methods.

• Documentation

  • Updated method signatures and documentation to reflect the new pagination parameters for clarity and usability.