Use System.Runtime.Serialization.Formatters NuGet package for .NET 8+ targets

[Copilot]

BinaryFormatter is being removed in .NET 9. Microsoft provides System.Runtime.Serialization.Formatters as a NuGet package for .NET 8+ to maintain compatibility during the transition period.

Changes

Mbc.Pcs.Net.DataRecorder.csproj

• Add conditional PackageReference to System.Runtime.Serialization.Formatters v10.0.1 for net8.0
• Restrict EnableUnsafeBinaryFormatterSerialization to netstandard2.0 and net471 targets only

Mbc.Pcs.Net.DataRecorder.Test.csproj

• Add conditional PackageReference to System.Runtime.Serialization.Formatters v10.0.1 for net8.0
• Add EnableUnsafeBinaryFormatterSerialization for net8.0 to enable BinaryFormatter in tests

FileRingBufferTest.cs

• Remove manual AppContext.SetSwitch call (no longer needed with NuGet package)

Behavior

Target Framework	BinaryFormatter Source
netstandard2.0, net471	Built-in (legacy)
net8.0	NuGet package v10.0.1

The SerializationObjectPersister implementation remains unchanged - BinaryFormatter continues to work across all targets with appropriate configuration.

Original prompt

---

This section details on the original issue you should resolve

<issue_title>Replace BinaryFormatter with nuget Version </issue_title>
<issue_description>As in .net 9 BinaryFormatter() will be removed

https://steven-giesel.com/blogPost/4271d529-5625-4b67-bd59-d121f2d8c8f6/a-replacement-for-binaryformatter-in-net-8
</issue_description>

Comments on the Issue (you are @copilot in this section)

@bqstony We should use the new nuget 😎 for .net target beginning with version 8. The old framework targets can still use the current implementation

https://www.nuget.org/packages/System.Runtime.Serialization.Formatters/10.0.1#supportedframeworks-body-tab</comment_new>

• Fixes Replace BinaryFormatter with nuget Version  #10

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