Adds the ability to read a amiibo's nickname from the VirtualAmiiboFile (#217)

This feature adds a way to change the Amiibo's nickname inside Smash and
other places where it's used, so it’s not always "Ryujinx." However, I
did not add a GUI or create the Cabinet applet that would allow users to
change this. So you will have to go to system/amiibo and find your
amiibo id to change it.

src/Ryujinx.HLE/HOS/Services/Nfc/Nfp/NfpManager/Types/VirtualAmiiboFile.cs

@@ -8,6 +8,7 @@ namespace Ryujinx.HLE.HOS.Services.Nfc.Nfp.NfpManager
         public uint FileVersion { get; set; }
         public byte[] TagUuid { get; set; }
         public string AmiiboId { get; set; }
+        public string NickName { get; set; }
         public DateTime FirstWriteDate { get; set; }
         public DateTime LastWriteDate { get; set; }
         public ushort WriteCounter { get; set; }