feat: update home-manager configuration and add custom icon support

- Include icons.nix in home.nix imports for custom icons
- Update Kitty desktop entry to use custom icon path
- Add librsvg and shared-mime-info to GNOME extensions

home-manager/gnome/default.nix

@@ -35,6 +35,8 @@
     gnomeExtensions.space-bar
     gnomeExtensions.tray-icons-reloaded
     gnomeExtensions.vitals
+    librsvg
     nordzy-icon-theme
+    shared-mime-info
   ];
 }

home-manager/home.nix

@@ -1,11 +1,13 @@
-{ pkgs
-, lib
-, ...
+{
+  pkgs,
+  lib,
+  ...
 }:
 {
   imports = [
     ./custom.nix
     ./gnome
+    ./icons.nix
     ./nvim
     ./zsh.nix
   ];

home-manager/icons.nix

@@ -5,7 +5,9 @@
   xdg.desktopEntries.kitty = {
     name = "Kitty";
     exec = "kitty";
-    icon = "kitty";
+    icon = "${
+      icons.packages.${pkgs.system}.default
+    }/share/icons/hicolor/scalable/apps/custom/kitty.svg";
     terminal = false;
     categories = [
       "System"