Prefer first embedded image that contains the 'front' keyword

src/libs/av/impl/AudioFile.cpp

@@ -281,9 +281,7 @@ namespace lms::av
 
             const AVPacket& pkt{ avstream->attached_pic };
 
-            picture.data = reinterpret_cast<const std::byte*>(pkt.data);
-            picture.dataSize = pkt.size;
-
+            picture.data = std::span{ reinterpret_cast<const std::byte*>(pkt.data), static_cast<std::size_t>(pkt.size) };
             func(picture, metadata);
         }
     }

src/libs/av/include/av/IAudioFile.hpp

@@ -23,6 +23,7 @@
 #include <filesystem>
 #include <functional>
 #include <optional>
+#include <span>
 #include <string>
 #include <string_view>
 #include <unordered_map>
@@ -60,8 +61,7 @@ namespace lms::av
     struct Picture
     {
         std::string mimeType;
-        const std::byte* data{}; // valid as long as IAudioFile exists
-        std::size_t dataSize{};
+        std::span<const std::byte> data; // valid as long as IAudioFile exists
     };
 
     struct ContainerInfo