Add feature and DiagnosticSource event for rejected request info (#34783)

src/Http/Http.Features/src/IBadRequestExceptionFeature.cs

src/Http/Http.Features/src/PublicAPI.Unshipped.txt

.../Core/src/Internal/Http/HttpProtocol.FeatureCollection.cs

.../Kestrel/Core/src/Internal/Http/HttpProtocol.Generated.cs

src/Servers/Kestrel/Core/src/Internal/Http/HttpProtocol.cs

src/Servers/Kestrel/Core/src/Internal/KestrelServerImpl.cs

src/Servers/Kestrel/Core/src/Internal/ServiceContext.cs

...trel/test/InMemory.FunctionalTests/BadHttpRequestTests.cs

...trel/tools/CodeGenerator/HttpProtocolFeatureCollection.cs