Investigate Traversals to replace/simplify solution filters

A while ago we created some scripts and yaml files to allow us to automatically generate solution files so that we could "filter" the projects to include in a build based on multiple dimensions:
- https://github.com/getsentry/sentry-dotnet/pull/2576

[MSBuild.Traversal](https://github.com/microsoft/MSBuildSdks/tree/main/src/Traversal#microsoftbuildtraversal) might be a better solution to this problem though, and can even be [used in conjunction with Sln files](https://github.com/microsoft/MSBuildSdks/tree/main/src/Traversal#dynamically-skip-projects-in-a-visual-studio-solution-file).