Renaming RuntimeEventSource to NativeRuntimeEventSource (dotnet/coreclr#22533)
* Renaming RuntimeEventSource to NativeRuntimeEventSource
* missed a couple of comments and XPlatEventLogger
* rename DotNETRuntimeEventSource.cs to NativeRuntimeEventSource.cs
* use condition= instead of ifdef
* removing ifdef from NativeRuntimeEventSource.cs
* Fix case for 'eventing' directory in csproj
* Fix unix builds
* This should fix unix build...
Commit migrated from https://github.com/dotnet/coreclr/commit/
c4007d88a0c556182f70d7714e5b55cca92331a0