Creates a new command-line interface for managing Edge Connect applications and instances with the following features:
- Configuration management via YAML files and environment variables
- Application lifecycle commands (create, show, list, delete)
- Instance management with cloudlet support
- Improved error handling and authentication flow
- Comprehensive documentation with usage examples
The CLI provides a user-friendly interface for managing Edge Connect resources while following best practices for command-line tool development using Cobra and Viper.