WinRT.SourceGenerator

Orignal codes are copied from CsWinRT

Modifed the Generator.SourceGenerator and related code to implements IIncrementalGenerator. Use RegisterImplementationSourceOutput to avoid unnecessary generation attempt.

Usage

1. Download the WinRT.SourceGenerator.dll from release or clone this repo and build yourself.
2. Find the Microsoft.Windows.CsWinRT nuget package local cache and the correct version.
3. Find analyzers/dotnet/cs/WinRT.SourceGenerator.dll
4. Replace the file and restart Visual Studio.

Now you should see your CPU calm down again.

Not fully tested and should use the official build once Microsoft implement this.