minor changes and added namespace to avoid conflicts when integrating with PanoPainter

engine/image.h

@@ -1,5 +1,7 @@
 #pragma once
 
+namespace ui {
+
 class Image
 {
     std::unique_ptr<uint8_t[]> m_data;
@@ -11,3 +13,5 @@ public:
     const uint8_t* data() const { return m_data.get(); }
     int size() const { return width * height * comp; }
 };
+
+}