Update: Initial rewrite of the analytics core - Only implements NullUploader, I'll implement actual uploaders after tests are good - Added basic tests for it, but they don't validate anything - that'll be next. - Renamed existing AnalyticsTests.cs to Test.EventRecord.cs (+ internal rename) - those tests validate EventRecord serialization Goal is to use one implementation to cover needs of both Client and Server. Got the basics done, need to add telemetry to be able to test better, support EventRecord pooling and implement the existing uploaders. Tests: ran new unit tests