Add default constructor

openVulkanoCpp/IO/MemMappedFile.hpp

@@ -27,6 +27,8 @@ namespace OpenVulkano
 			READ_WRITE
 		};
 
+		MemMappedFile() : m_data(nullptr), m_size(0) {}
+
 		MemMappedFile(const std::filesystem::path& path, FileMode fileMode = READ_ONLY);
 
 		[[nodiscard]] bool IsOpen() const { return m_data; }