This commit adds a new script `run.sh` to the `install-cursor` directory. The script
automates the process of downloading and installing the Cursor AI application for
various platforms (macOS, Linux, and Windows).
The key changes include:
- Fetching the latest version information from a JSON file
- Detecting the user's operating system and architecture
- Downloading the appropriate binary for the detected platform
- Verifying the binary's signature and notarization status on macOS
- Installing the application on the user's system
This script aims to simplify the installation process and ensure a smooth user
experience when setting up the Cursor AI application.
