Add rofi emoji picker

Signed-off-by: Nikolaos Karaolidis <nick@karaolidis.com>

hosts/common/user/configs/gui/emoji/default.nix

@@ -0,0 +1,23 @@
+{
+  user ? throw "user argument is required",
+  home ? throw "home argument is required",
+}:
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
+let
+  hmConfig = config.home-manager.users.${user};
+in
+{
+  home-manager.users.${user} = {
+    programs.rofi.plugins = with pkgs; [ rofi-emoji-wayland ];
+
+    wayland.windowManager.hyprland.settings.bind = [
+      # Super + Shift + :
+      "$mod_Shift, code:47, exec, ${lib.meta.getExe hmConfig.programs.rofi.finalPackage} -cache-dir ${home}/.cache/rofi -modi emoji -show emoji"
+    ];
+  };
+}