Split system-level sway and plasma config into separate files, move
sway-specific home-level config to sway file. Only truly common
desktop components are kept in common spaces. This allows much easier
switching between using KDE Plasma and Sway.
Place home-manager config under home directory, move system config
under system directory.
Add hostname-specific entries under home directory to be consistent
with how system is configured, update flake accordingly
Evie Litherland-Smith