chore: organise modules

Organise modules in a significantly better way with categories.

modules/desktop/fonts.nix

@@ -0,0 +1,13 @@
+{ config, lib, pkgs, ... }:
+
+{
+  # install basic fonts
+  fonts = {
+    packages = with pkgs; [ 
+      noto-fonts                # most langs and emojis
+      noto-fonts-cjk-sans       # gets japanese and chinese langs
+      nerd-fonts.comic-shanns-mono # programming fonts
+      corefonts                 # basic web fonts
+    ];
+  };
+}