Add CLI support for Locksmith

[irfanghat]

Issue: Add CLI Support for Locksmith

Description

Locksmith currently lacks a command-line interface (CLI) for managing secrets, which limits usability for developers, DevOps engineers, and IoT/Edge deployments. This issue aims to introduce a feature-rich CLI to interact with Locksmith, enabling seamless secret management via terminal commands.

Proposed Features:

• Authentication & Configuration: CLI should support authentication methods (e.g., token-based, certificate-based).
• Secret Management:
  • Store, retrieve, update, and delete secrets.
  • List available secrets with metadata.
• Access Control:
  • Manage permissions for users, devices, and applications.
• Secret Rotation & Expiry:
  • Rotate secrets manually or trigger automatic rotation.
• Integration & Scripting:
  • Support for CI/CD automation and scripting.
• User-Friendly Output:
  • JSON and human-readable formats for easy parsing.

Technical Considerations:

• Written in Rust, aligning with Locksmith’s core implementation.
• Cross-platform support (Linux, macOS, Windows).
• Compatible with existing Locksmith API endpoints.

Expected Outcome

A robust CLI tool that enhances usability, security, and automation for managing secrets with Locksmith.