Move home/ directory under system/ directory. Remove duplicated
machine-specific config files, now handled as one per host (excluding
hardware-configuration directory)
Move as much configuration as possible out of flake.nix and into more
appropriate files (e.g. system/default.nix)
Add a desktop.nix and laptop.nix for system, both will import
home/desktop.nix and home/laptop.nix respectively to reduce
duplication in machine-specific config files
Remove games and streaming directories, moved directly into Vanguard
config file
Remove home/personal.nix since it ended up being empty after changes
Remove old sway config since I haven't been maintaining it and this
refactor will definitely break it
