Gui Reorg and More Programs

- Gui config reorganization
- Enable picom for dwm
- Install some utilities like arandr, autorandr, and unclutter-xfixes
  for dwm
- Add nerdfonts for FiraCode
- Remove conditional imports list syntax
- Add audio tools like playerctl and pavucontrol
- Enable polkit and add GNOME polkit
- Add more media programs like freecad, audacity, ani-cli, and calibre
- Add flameshot

system/gui/fonts.nix

@@ -6,5 +6,10 @@
     powerline
     font-awesome
     ubuntu_font_family
+    (nerdfonts.override {
+      fonts = [
+        "FiraCode"
+      ];
+    })
   ];
 }