nightly-2024-04-22: chore: update noir README (#4856)

# Description

## Problem\*

Resolves <!-- Link to GitHub Issue -->

## Summary\*

The current readme is extremely stale and contains a bunch of incorrect
info. I've updated this

## Additional Context



## Documentation\*

Check one:
- [ ] No documentation needed.
- [ ] Documentation included in this PR.
- [ ] **[For Experimental Features]** Documentation to be submitted in a
separate PR.

# PR Checklist\*

- [ ] I have tested the changes locally.
- [ ] I have formatted the changes with [Prettier](https://prettier.io/)
and/or `cargo fmt` on default settings.