Install twemoji-ttf, twemoji-color-font displays as outline

hosts/desktop.nix

@@ -54,6 +54,7 @@ in
       mplus-outline-fonts.osdnRelease
       noto-fonts
       (nerdfonts.override { fonts = [ "FiraCode" ]; }) # required for icons
+      (pkgs.callPackage ../twemoji.nix {})
     ];
   };
 }