add desktop module

modules/desktop.nix

@@ -0,0 +1,14 @@
+{ self, pkgs, ... }:
+{
+  environment.systemPackages = [
+    pkgs.mpv # video player
+    pkgs.amberol # music player
+  ];
+
+  programs.firefox = {
+    enable = true;
+    nativeMessagingHosts.packages = [ pkgs.passff-host ];
+  };
+
+  programs.thunderbird.enable = true;
+}

modules/flake-module.nix

@@ -3,5 +3,9 @@
     gitea.imports = [
       ./gitea.nix
     ];
+
+    desktop.imports = [
+      ./desktop.nix
+    ];
   };
 }