obsolete attribs for binary formatting

Author: danmoseley

global.json

@@ -1,6 +1,6 @@
 {
  "sdk": {
- "version": "6.0.300",
+ "version": "6.0.408",
  "rollForward": "patch",
  "allowPrerelease": false
  }

src/MessagePack.UnityClient/Assets/Scripts/MessagePack/IFormatterResolver.cs

@@ -116,6 +116,7 @@ public FormatterNotRegisteredException(string message)
  {
  }
 
+ [Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.")]
  protected FormatterNotRegisteredException(SerializationInfo info, StreamingContext context)
  : base(info, context)
  {

src/MessagePack.UnityClient/Assets/Scripts/MessagePack/Internal/TinyJsonReader.cs

@@ -48,6 +48,7 @@ public TinyJsonException(string message)
  {
  }
 
+ [Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.")]
  protected TinyJsonException(SerializationInfo info, StreamingContext context)
  : base(info, context)
  {

src/MessagePack.UnityClient/Assets/Scripts/MessagePack/MessagePackSerializationException.cs

@@ -47,6 +47,7 @@ public MessagePackSerializationException(string message, Exception inner)
  /// </summary>
  /// <param name="info">Serialization info.</param>
  /// <param name="context">Serialization context.</param>
+ [Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.")]
  protected MessagePackSerializationException(
  System.Runtime.Serialization.SerializationInfo info,
  System.Runtime.Serialization.StreamingContext context)