[FEATURE REQUEST]: Use PublicApiAnalyzers to ease maitaining backwards compatibility

[marcin-krystianc]

Is your feature request related to a problem? Please describe.

We let Newtonsoft.Json slip into Public API, but we do not want to expose json library as it is only an internal implementation detail.

Describe the solution you'd like

[ ] - Use [PublicApiAnalyzers]https://github.com/dotnet/roslyn-analyzers/blob/main/src/PublicApiAnalyzers/PublicApiAnalyzers.Help.md)
[ ] - Make the converter classes which expose Newtonsoftinternal

Describe alternatives you've considered

No response

Additional context

No response

[sungam3r]

Please consider this alternative - https://github.com/PublicApiGenerator/PublicApiGenerator

Many people find this more friendly to use.