Re-add kwin and hyprland helper to get window title, this time without a thread

include/DesktopEnvironment/DesktopEnvironmentKde.hpp

@@ -0,0 +1,29 @@
+#pragma once
+
+#include "DesktopEnvironment.hpp"
+
+namespace gsr {
+    class DesktopEnvironmentKde : public DesktopEnvironment {
+    public:
+        DesktopEnvironmentKde() = default;
+        DesktopEnvironmentKde(const DesktopEnvironmentKde&) = delete;
+        DesktopEnvironmentKde& operator=(const DesktopEnvironmentKde&) = delete;
+        ~DesktopEnvironmentKde();
+
+        bool start() override;
+        void update() override;
+        std::string get_focused_window_title() override;
+        //std::string get_focused_monitor_name() override;
+    private:
+        void shutdown();
+    private:
+        pid_t process_id = -1;
+        FILE *stdout_file = nullptr;
+        int read_fd = -1;
+        char line_buffer[1024];
+        std::string line;
+
+        std::string window_title;
+        std::string monitor_name;
+    };
+}