Add initial ntag and nfc implementation

src/Cafe/OS/libs/nfc/TLV.h

@@ -0,0 +1,37 @@
+#pragma once
+
+#include <cstdint>
+#include <span>
+#include <vector>
+
+class TLV
+{
+public:
+	enum Tag
+	{
+		TAG_NULL        = 0x00,
+		TAG_LOCK_CTRL   = 0x01,
+		TAG_MEM_CTRL    = 0x02,
+		TAG_NDEF        = 0x03,
+		TAG_PROPRIETARY = 0xFD,
+		TAG_TERMINATOR  = 0xFE,
+	};
+
+public:
+	TLV();
+	TLV(Tag tag, std::vector<std::byte> value);
+	virtual ~TLV();
+
+	static std::vector<TLV> FromBytes(const std::span<std::byte>& data);
+	std::vector<std::byte> ToBytes() const;
+
+	Tag GetTag() const;
+	const std::vector<std::byte>& GetValue() const;
+
+	void SetTag(Tag tag);
+	void SetValue(const std::span<const std::byte>& value);
+
+private:
+	Tag mTag;
+	std::vector<std::byte> mValue;
+};