lists: refactor and make Foris not the top level package

There are multiple changes to updater's lists. In most cases it is about moving packages around and grouping them together to simplify future maintenance.

Significant change is usage of conditional requests. Updater now installs Foris plugins not because some package list was selected but because some package was installed. This makes it so users running minimal setup (without web interface) can use package lists and still have full system with it.

One important change to note here is that SSH client was moved from minimal base list to terminal-apps. The reason is that it is not essentially required for router's functionality or access. It is more about secondary usage from CLI so it should have been part of terminal-apps all time along.

Implements https://gitlab.nic.cz/turris/turris-build/-/issues/184