Move firefox configs to dedicated dir

config/firefox/extensions.nix

@@ -0,0 +1,15 @@
+args:
+
+{
+  packages = let
+    firefox-addons = args.firefox-addons or null;
+  in
+    if firefox-addons != null then
+      with firefox-addons.packages.${args.pkgs.system}; [
+        ublock-origin
+        linkding-extension
+        vimium
+        darkreader
+      ]
+    else [];
+}

config/firefox/search.nix

@@ -0,0 +1,25 @@
+{
+  force = true;
+  default = "ddg";
+  
+  # Uncomment to enable custom search engines
+  # engines = {
+  #   "Nix Packages" = {
+  #     urls = [{
+  #       template = "https://search.nixos.org/packages";
+  #       params = [
+  #         { name = "channel"; value = "unstable"; }
+  #         { name = "query"; value = "{searchTerms}"; }
+  #       ];
+  #     }];
+  #     icon = "''${pkgs.nixos-icons}/share/icons/hicolor/scalable/apps/nix-snowflake.svg";
+  #     definedAliases = [ "@np" ];
+  #   };
+  #   
+  #   "NixOS Wiki" = {
+  #     urls = [{ template = "https://wiki.nixos.org/index.php?search={searchTerms}"; }];
+  #     icon = "https://wiki.nixos.org/favicon.png";
+  #     definedAliases = [ "@nw" ];
+  #   };
+  # };
+}