- Import kitty.nix in wayland.nix
- Change sway terminal keybinding to open kitty

Allows kitty graphics protocol to work inside tmux sessions.

Uses forked yt-x with support for full path extensions (-x flag).
Passes our custom mpv (with quality-menu, sponsorblock, etc.) via
extension file in nix store.

PR upstream: https://github.com/Benexl/yt-x/pull/130

- Font configuration (IosevkaTerm Nerd Font)
- Remote control enabled for runtime theme switching
- Light and dark theme colors in /etc/themes/
- Integrates with switch-theme for dynamic color changes

This reverts commit 1f1a5b3b98c12b8f8b3cfa67f63d8d6be5cde9f1.

this broke nix shell and nix=shell --command zsh