[frontend] add revolt links to about (#227)

Signed-off-by: crueter <crueter@eden-emu.dev>
Reviewed-on: #227
Reviewed-by: Lizzie <lizzie@eden-emu.dev>

src/yuzu/main.h

@@ -346,6 +346,8 @@ private slots:
     void OnOpenQuickstartGuide();
     void OnOpenFAQ();
     void OnOpenDiscord();
+    void OnOpenRevolt();
+
     /// Called whenever a user selects a game in the game list widget.
     void OnGameListLoadFile(QString game_path, u64 program_id);
     void OnGameListOpenFolder(u64 program_id, GameListOpenTarget target,