home: create 'modules/home' folder

Consolidating all modules under the same path, to clear out the
top-level directory.

modules/home/discord/default.nix

@@ -0,0 +1,23 @@
+{ config, lib, pkgs, ... }:
+let
+  cfg = config.my.home.discord;
+
+  jsonFormat = pkgs.formats.json { };
+in
+{
+  options.my.home.discord = with lib; {
+    enable = mkEnableOption "discord configuration";
+  };
+
+  config = lib.mkIf cfg.enable {
+    home.packages = with pkgs; [
+      discord
+    ];
+
+    xdg.configFile."discord/settings.json".source =
+      jsonFormat.generate "discord.json" {
+        # Do not keep me from using the app just to force an update
+        SKIP_HOST_UPDATE = true;
+      };
+  };
+}