Add application audio option

include/gui/LineSeparator.hpp

@@ -0,0 +1,24 @@
+#pragma once
+
+#include "Widget.hpp"
+
+namespace gsr {
+    class LineSeparator : public Widget {
+    public:
+        enum class Type {
+            HORIZONTAL
+        };
+
+        LineSeparator(Type type, float width);
+        LineSeparator(const LineSeparator&) = delete;
+        LineSeparator& operator=(const LineSeparator&) = delete;
+
+        bool on_event(mgl::Event &event, mgl::Window &window, mgl::vec2f offset) override;
+        void draw(mgl::Window &window, mgl::vec2f offset) override;
+
+        mgl::vec2f get_size() override;
+    private:
+        Type type;
+        float width;
+    };
+}