Common/Network: Add BluetoothAddress struct and string conversion functions.

Source/Core/Common/Network.cpp

@@ -86,6 +86,21 @@ std::optional<MACAddress> StringToMacAddress(std::string_view mac_string)
   return std::make_optional(mac);
 }
 
+std::string BluetoothAddressToString(BluetoothAddress bdaddr)
+{
+  std::ranges::reverse(bdaddr);
+  return MacAddressToString(std::bit_cast<MACAddress>(bdaddr));
+}
+
+std::optional<BluetoothAddress> StringToBluetoothAddress(std::string_view str)
+{
+  auto result = StringToMacAddress(str);
+  if (!result)
+    return std::nullopt;
+  std::ranges::reverse(*result);
+  return std::bit_cast<BluetoothAddress>(*result);
+}
+
 EthernetHeader::EthernetHeader() = default;
 
 EthernetHeader::EthernetHeader(u16 ether_type) : ethertype(htons(ether_type))

Source/Core/Common/Network.h

@@ -36,6 +36,12 @@ enum DHCPConst
 };
 
 using MACAddress = std::array<u8, MAC_ADDRESS_SIZE>;
+
+// Note: Bluetooth address display order is reverse of the storage order.
+struct BluetoothAddress : std::array<u8, MAC_ADDRESS_SIZE>
+{
+};
+
 constexpr std::size_t IPV4_ADDR_LEN = 4;
 using IPAddress = std::array<u8, IPV4_ADDR_LEN>;
 constexpr IPAddress IP_ADDR_ANY = {0, 0, 0, 0};
@@ -259,8 +265,13 @@ struct NetworkErrorState
 };
 
 MACAddress GenerateMacAddress(MACConsumer type);
+
 std::string MacAddressToString(const MACAddress& mac);
 std::optional<MACAddress> StringToMacAddress(std::string_view mac_string);
+
+std::string BluetoothAddressToString(BluetoothAddress bdaddr);
+std::optional<BluetoothAddress> StringToBluetoothAddress(std::string_view str);
+
 u16 ComputeNetworkChecksum(const void* data, u16 length, u32 initial_value = 0);
 u16 ComputeTCPNetworkChecksum(const IPAddress& from, const IPAddress& to, const void* data,
                               u16 length, u8 protocol);