MSBuild BuildCheck timing reporting

[baronfel]

The MSBuild team is developing BuildChecks (build-execution-time analyzers) and like the Roslyn Analyzers that we're drawing so much inspiration from, we've invested in profiling/timing the entire buildcheck infra as well as specific buildchecks and rules.

It would be great if the binlog viewer could report these timings in a folder similar to roslyn analyzers to make it easier to locate and consume the information.

[rainersigwald]

Note that we should make sure that the data MSBuild emits is structured nicely for this use case before making viewer-side changes.

[KirillOsenkov]

If you have the sample data somewhere this shouldn't be too hard

[KirillOsenkov]

We already have a precedent with /profileevaluation, and the Csc /reportanalyzer