Add support for bootupd

Fedora Atomic systems (rpm-ostree based systems) do not update the BIOS / EFI bootloaders files by default on updates as this operation may fail and leave the system in an un-bootable state.

The bootupd project has been created to fix this issue, creating a user/administrator triggered process to update the bootloader.

The goal of this issue is to add support for bootupd to all Atomic desktops.

See: https://fedoraproject.org/wiki/Changes/FedoraSilverblueBootupd

Steps:

• Build atomic desktops in unified core mode:
  • See: https://fedoraproject.org/wiki/Changes/FedoraSilverblueUnifiedCore
  • Done in Fedora 39
• Add support to Anaconda to use bootupd to install the bootloader:
  • See: https://pagure.io/workstation-ostree-config/pull-request/330#comment-191687
• Enable bootupd in atomics manifests:
  • https://pagure.io/workstation-ostree-config/pull-request/403