micro improvements

lib/imaging/Image.cpp

@@ -1,15 +1,18 @@
 #include "Image.hpp"
 
 #include <filesystem>
+#include <format>
+#include <memory>
 #include <opencv2/imgcodecs.hpp>
 #include <stdexcept>
+#include <string_view>
 
 pixelarium::imaging::Image::Image(const std::string& uri)
 {
     if (!std::filesystem::exists(uri))
     {
-        throw std::runtime_error("File not found");
+        throw std::runtime_error(std::format("File not {} found", uri));
     }
 
-    this->_img = cv::imread(uri);
+    this->_img = std::make_unique<cv::Mat>(cv::imread(uri));
 }