[PATCH SERIES v2] Add ability to prevent suggesting previously used VM/CT IDs

[Severen Redwood]

Hi,

Is someone able to review this updated patch series? I think
the previous comments should be addressed.

Also, the actual patches seem to have ended up disconnected
from the cover letter, so for reference, you can find them
here:
https://lore.proxmox.com/pve-devel/mailman.178.1728018645.332.pve-devel@lists.proxmox.com/T/#t

Thanks,
Severen