feat(hosts/arwen): enable tailscale

feat(roles/docker, roles/base): docker role

feat(roles/graphics): merge graphics roles

feat(roles/amdgpu, hosts/arwen): amdgpu role

fix(hosts/arwen): update gaming role

feat(roles/qutebrowser, hosts/arwen): qutebrowser role and add to arwen

feat(roles/steam, hosts/arwen): steam role and enable for arwen

feat: hyprland, kitty, shell env

feat: restructure