Add cursor rules files

### Required Pre-requisites

- [x] I have read the [Documentation](https://www.aci.dev/docs)
- [x] I have searched the [Issue Tracker](https://github.com/aipotheosis-labs/aci/issues) and [Discussions](https://github.com/aipotheosis-labs/aci/discussions) that this hasn't been reported yet.
- [ ] Consider asking in [Discussions](https://github.com/aipotheosis-labs/aci/discussions) first

### Motivation

This may improve Cursor performance when working with our codebase.

### Proposed Solution

Add cursor rules files. Consider if it's better to just add a file at the root level or two individual files in the frontend and backend folder respectively.