Update internal SBRP targeting pack tooling to filter out analyzer assemblies and entries in FrameworkList.xml

[ViktorHofer]

Similarly to #4933, the internal tooling should remove any files under "/analyzer" and also update the FrameworkList.xml file and remove any entries that start with "/analyzers".

See dotnet/source-build-reference-packages#1199 for more details.

[MichaelSimons]

I implemented a low cost solution in https://dev.azure.com/dnceng/internal/_git/dotnet-source-build-utilities/pullrequest/49394. The long term direction is dotnet/source-build-reference-packages#1313.