Function setup_backup_locations 

pub fn setup_backup_locations(config: &Config) -> Result<(), Box<dyn Error>>

Sets up backup locations based on the server’s role.

This function determines which directories to back up based on the server’s role (web, database, or application server). It then initializes a restic repository and creates a backup script that includes these locations.

Arguments

• config - A reference to the Config struct containing the server role

Returns

Returns Ok(()) if backup locations are set up successfully, or an error if setup fails.