Function install_service 

pub fn install_service(
    dry_run: bool,
    force: bool,
    manager: Option<ServiceManager>,
) -> Result<()>

Install the agent as a system service.

Args:

• dry_run: If true, print the service file without installing.
• force: If true, overwrite an existing service file.
• manager: Service manager to use, or auto-detect if None.

Usage:

install_service(false, false, None)?;