feat(sway/scratchpad): add basic counter

include/modules/sway/scratchpad.hpp

@@ -0,0 +1,34 @@
+#pragma once
+
+#include <gtkmm/label.h>
+
+#include <mutex>
+#include <string>
+
+#include "ALabel.hpp"
+#include "bar.hpp"
+#include "client.hpp"
+#include "modules/sway/ipc/client.hpp"
+#include "util/json.hpp"
+
+namespace waybar::modules::sway {
+// class Scratchpad : public AModule, public sigc::trackable {
+class Scratchpad : public ALabel {
+ public:
+  Scratchpad(const std::string&, const waybar::Bar&, const Json::Value&);
+  ~Scratchpad() = default;
+  auto update() -> void;
+
+ private:
+  auto getTree() -> void;
+  auto onCmd(const struct Ipc::ipc_response&) -> void;
+  auto onEvent(const struct Ipc::ipc_response&) -> void;
+  // bool handleScroll(GdkEventScroll*);
+  Gtk::Box box_;
+  const Bar& bar_;
+  std::mutex mutex_;
+  int count_;
+  Ipc ipc_;
+  util::JsonParser parser_;
+};
+}  // namespace waybar::modules::sway