Rns integration - Githubissues

Background

In this PR we have done the RNS integration. For more information about it please go check https://dev.rootstock.io/rif/rns/.

It was created a new NamingService for Rns.

This Pull Request was thoroughly reviewed and meets all Code Review Standards pertaining to:

[ ] Implementation - satisfied acceptance criteria
[ ] Communication - notified engineers/stakeholders about impactful changes
[ ] Error handling - handled, logged & alerted on errors
[ ] Documentation - wrote readable code & commits, documented unintuitive code
[ ] Testing - unit & E2E test coverage, tested in staging, DB migrations backwards compatible
[ ] Security - sanitized inputs, vetted dependencies, validated/secured API requests, no committed secrets
[ ] Performance - optimized expensive algorithms & database queries

Please select all applied standards relevant to this PR.

[ ] Assignee Confirmation - I (the author) have filled out the template above
[ ] Reviewer Confirmation - I (a/the reviewer) confirm 1) the author has filled out the template and checked the box that says Assignee Confirmation 2) I reviewed the code and selected all applicable items in the code review section.