nix: add hyprland module

nix/modules/hyprland.nix

@@ -0,0 +1,45 @@
+{ config, lib, pkgs }:
+
+{
+  programs.hyprland.enable = true;
+  # Optional, hint electron apps to use wayland:
+  environment.sessionVariables.NIXOS_OZONE_WL = "1";
+
+  # have portals
+  xdg.portal.enable = true;
+  xdg.portal.extraPortals = [ pkgs.xdg-desktop-portal-gtk ];
+
+  # install basic fonts
+  fonts = {
+    fontDir.enable = true; # fixes some programs
+    packages = with pkgs; [ 
+      noto-fonts # most langs and emojis
+      nerdfonts  # programming fonts
+      corefonts  # basic web fonts
+    ];
+  };
+
+  programs.hyprlock.enable = true;
+
+  # Enable sound.
+  security.rtkit.enable = true;
+  services.pipewire = {
+    enable = true;
+    alsa.enable = true;
+    alsa.support32Bit = true;
+    pulse.enable = true;
+    jack.enable = true;
+  };
+
+  environment.systemPackages = with pkgs; [
+    kitty
+    waybar
+    swww
+    grim
+    slurp
+    wl-clipboard
+    brightnessctl
+    helvum
+    ulauncher
+  ];
+}