Initial UI in src

src/UI/UI_x_boxes.cpp

@@ -0,0 +1,31 @@
+#include "UI_x_boxes.hpp"
+
+UI_x_boxes::UI_x_boxes(std::string type)
+    : UI_item(type), p_options()
+{
+}
+
+UI_x_boxes::UI_x_boxes(std::string id, std::string type, std::string text, Color fg_color, Color bg_color, std::vector<std::string> options)
+    : UI_item(id, type, text, 12, fg_color, bg_color), p_options(options)
+{
+}
+
+void UI_x_boxes::from_json(const json& j)
+{
+    UI_item::from_json(j);
+    if (j.contains("options"))
+    {
+        this->p_options.clear();
+        for (auto option : j["options"])
+        {
+            this->p_options.push_back(option);
+        }
+    }
+}
+
+json UI_x_boxes::to_json() const
+{
+    json j = UI_item::to_json();
+    j["options"] = this->p_options;
+    return j;
+}