Fixes#2945
Split the config and rule persistency in 2 attributes, one storing the
persistency as set in Waybar's config, the other one storing the
persistency as set in Hyprland.
It fixes some conflicts between the persistency state of a workspace as
set in Waybar's config and its dynamic state in Hyprland.
It allows to remove a persistent workspace in Waybar if this workspace
is removed from Hyprland and if the workspace is not set as persistent
in Waybar's config.
b3ee94d87a