Create a Nuget package for RuntimeConfigParser

[fanyang-mono]

Create a Nuget package for RuntimeConfigParser by following this example:
https://github.com/dotnet/runtime/tree/main/src/mono/nuget/Microsoft.NET.Runtime.MonoAOTCompiler.Task

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Issue Details

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Create a Nuget package for RuntimeConfigParser by following this example:
https://github.com/dotnet/runtime/tree/main/src/mono/nuget/Microsoft.NET.Runtime.MonoAOTCompiler.Task

Author:	fanyang-mono
Assignees:	fanyang-mono
Labels:	area-Infrastructure-mono
Milestone:	6.0.0