feat(layers): add layering system

src/components/layer_component.h

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+#pragma once
+
+struct LayerComponent {
+    int layer;
+
+    LayerComponent(int layer = 0) : layer(layer) {}
+};

src/components/ui_component.cpp

@@ -0,0 +1,5 @@
+//
+// Created by illyum on 9/12/2024.
+//
+
+#include "ui_component.h"

src/components/ui_component.h

@@ -0,0 +1,20 @@
+#pragma once
+#include <functional>
+#include <string>
+
+enum class UIState {
+    NORMAL,
+    HOVERED,
+    CLICKED
+};
+
+struct UIComponent {
+    std::string text;
+    float width;
+    float height;
+    std::function<void()> onClick;
+    UIState state = UIState::NORMAL;
+
+    UIComponent(std::string text, float width, float height, std::function<void()> onClick)
+        : text(std::move(text)), width(width), height(height), onClick(std::move(onClick)) {}
+};