Increase the coverage a bit to see if reporting is motivating :)

src/graphics/Bitmap.hpp

@@ -22,6 +22,7 @@
 #include <stdint.h>
 
 #include <cstdint>
+#include <memory>
 #include <optional>
 #include <vector>
 
@@ -41,6 +42,7 @@ class Bitmap {
     uint16_t getWidth();
     uint16_t getHeight();
     bool setPixels(const std::vector<T>& pixels);
+    std::vector<T> getPixelsCpy();
     std::optional<std::vector<T>> getLine(uint16_t line);
     std::optional<std::vector<T>> getCol(uint16_t col);