Add functionality to parse and execute commands for adding/removing service monitors and shutting down the watchdog. The ExecuteCommand function now handles "monitor.add", "monitor.remove" and "watchdog.shutdown" commands by interacting with the monitor package and system operations.
Implement a new monitoring system that tracks service status and logs using systemd commands. The monitor includes:
- Periodic status checks via systemctl
- Log analysis via journalctl
- Thread-safe service tracking
- Error detection and reporting
Implement basic watchdog service for Linux systemd with:
- Configuration loading
- Logging system with database support
- WebSocket log broadcasting
- TCP server for agent communication
- Project setup with Go modules
