Where to install UKI cmdline addons in the root partition

[Emanuele Giuseppe Esposito <eesposit@xxxxxxxxxx>]

Hello everyone,

Sorry for the back-to-back emails, but I realized I could use this
mailing list to bring up another topic related to UKI addons.

This is the same as I wrote in
https://github.com/systemd/systemd/issues/29372 : I think we need some
agreement to decide that if distros want to ship rpms containing default
signed UKI addons, they should all go in the same place in the root
partition.

By putting them there, we offer the user the possibility to keep the ESP
clean and lightweight (as there is not much space available in there
IIRC), and the user can simply cp the addons from the root partition
into the desired ESP to install the addon, and rm to remove them.

But I still think it is important to have some agreement, and document
it somewhere.

What do you think?

Thank you,
Emanuele