feat(tpanel): add tpanel module

modules/hm/desktop/mango.nix

@@ -194,7 +194,7 @@
           animation_type_close = "fade";
           animation_fade_in = 1;
           animation_fade_out = 1;
-          tag_animation_direction = 1;
+          tag_animation_direction = 0;
           zoom_initial_ratio = 0.3;
           zoom_end_ratio = 0.8;
           fadein_begin_opacity = 0.5;

modules/nixos/desktop/tpanel.nix

@@ -0,0 +1,7 @@
+{
+  flake.modules.nixos.desktop =
+    { pkgs, ... }:
+    {
+      environment.systemPackages = with pkgs; [ tpanel ];
+    };
+}