Add CLI support for Locksmith

**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.