Ubuntu 25.10

[wiktormowinski]

Add support for generating auto-install ISO for Ubuntu 22.04+ (preseed replaced by autoinstall)

From what i have gathered, auto install now requires executing following steps:

1. Create a user-data YAML file with an autoinstall section defining users, network, storage, timezone, and SSH (password must be hashed).
2. In the same directory, create an empty meta-data file.
3. Extract the Ubuntu 25.10 ISO, create a nocloud folder inside it, place user-data and meta-data there, modify GRUB to add autoinstall ds=nocloud;s=/cdrom/nocloud/ to the boot parameters, and repack the ISO.
4. Boot the machine with this ISO; the installer will detect user-data and perform an automatic installation.

it doesnt work for now though