refactored nixos directory & updated README

nixos/hyprland.nix

@@ -0,0 +1,21 @@
+{ pkgs, ... }:
+
+{
+  # Enable Hyprland
+  programs.hyprland.enable = true;
+  environment.sessionVariables.NIXOS_OZONE_WL = "1";
+  environment.sessionVariables.WLR_NO_HARDWARE_CURSORS = "1";
+
+  environment.systemPackages = with pkgs; [
+    wezterm
+    cool-retro-term
+
+    starship
+    helix
+
+    qutebrowser
+    zathura
+    mpv
+    imv
+  ];
+}