Add Unraid as OS

[GerardPolloRebozado]

Unraid is a great os for people that want to start in selfhosting and dont know much about linux, it comes with a webui that is very easy to use and gives a lot of flexibility about the drives

Extended explanation:
Unraid is a Linux-based operating system optimized for media file storage, application hosting, and virtualization. It is designed for personal and small business use, offering a unique approach to data storage with its proprietary file system that allows for the combination of hard drives of different sizes and speeds without sacrificing total capacity. Unlike traditional RAID systems, Unraid stores data in a way that minimizes the risk of data loss in the event of a drive failure, as data is spread out across individual drives rather than striped across all drives.