Move more files

.appveyor.yml

.editorconfig

.gitattributes

CONTRIBUTING.md

LICENSE.txt

NuGet.config

THIRD_PARTY_NOTICES

build.cmd

run.cmd

run.ps1

src/IISIntegration/NuGetPackageVerifier.xplat.json

src/IISIntegration/korebuild.json

src/IISIntegration/nuget/AspNetCoreV1.nuspec

src/IISIntegration/nuget/AspNetCoreV2.nuspec

...gration/nuget/Microsoft.AspNetCore.AspNetCoreModule.props

src/IISIntegration/test/gtest-1.8.0/CHANGES

src/IISIntegration/test/gtest-1.8.0/CMakeLists.txt

src/IISIntegration/test/gtest-1.8.0/CONTRIBUTORS

src/IISIntegration/test/gtest-1.8.0/LICENSE

src/IISIntegration/test/gtest-1.8.0/Makefile.am