Re-do the build infrastructure

.gitignore

@@ -20,3 +20,5 @@ node_modules
 .nuget/NuGet.exe
 docs/build
 .vs
+.dotnet
+.packages

CredScanSuppressions.json

@@ -0,0 +1,12 @@
+{
+  "tool": "Credential Scanner",
+  "suppressions": [
+    {
+      "_justification": "Legitimate key/cert used for testing",
+      "file": [
+        "tests/Microsoft.Owin.Host.HttpListener.Tests/HttpsServerTestCertificate.pfx",
+        "tests/Microsoft.Owin.Host.IntegrationTests/SelfSignedClientCert.pfx"
+      ]
+    }
+  ]
+}

Directory.Build.props

@@ -0,0 +1,25 @@
+<Project>
+  <Import Project="Sdk.props" Sdk="Microsoft.DotNet.Arcade.Sdk" />
+
+  <PropertyGroup>
+    <Copyright>$(CopyrightMicrosoft)</Copyright>
+    <PackageLicenseExpression>Apache-2.0</PackageLicenseExpression>
+    <TreatWarningsAsErrors>True</TreatWarningsAsErrors>
+    <DebugType>embedded</DebugType>
+    <DebugSymbols>true</DebugSymbols>
+    <LangVersion>Latest</LangVersion>
+    <IsShipping>true</IsShipping>
+    <PackageTags>Microsoft OWIN Katana</PackageTags>
+    <DefaultNetFxTargetFramework>net4.5</DefaultNetFxTargetFramework>
+    <DefaultNetFxTestTargetFramework>net4.5.2</DefaultNetFxTestTargetFramework>
+  </PropertyGroup>
+
+  <PropertyGroup Condition="'$(DotNetBuildOffline)' == 'true'">
+    <!--
+      Arcade has a special version prop for CodeAnalysis.CSharp in GenFacades
+      to try to match the version loaded by msbuild.  In the offline build, this
+      is simply the source-built version.
+    -->
+    <MsbuildTaskMicrosoftCodeAnalysisCSharpVersion>$(MicrosoftCodeAnalysisCSharpVersion)</MsbuildTaskMicrosoftCodeAnalysisCSharpVersion>
+  </PropertyGroup>
+</Project>

Directory.Build.targets

@@ -0,0 +1,3 @@
+<Project>
+  <Import Project="Sdk.targets" Sdk="Microsoft.DotNet.Arcade.Sdk" />
+</Project>

LICENSE.txt

@@ -1,3 +1,4 @@
+
                                  Apache License
                            Version 2.0, January 2004
                         http://www.apache.org/licenses/
@@ -186,7 +187,7 @@
       same "printed page" as the copyright notice for easier
       identification within third-party archives.
 
-   Copyright (c) .NET Foundation and Contributors
+   Copyright [yyyy] [name of copyright owner]
 
    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.
@@ -198,4 +199,4 @@
    distributed under the License is distributed on an "AS IS" BASIS,
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
-   limitations under the License.
+   limitations under the License.

NuGet.Config

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="utf-8"?>
+<configuration>
+  <packageSources>
+    <clear />
+    <!-- Feed to use to restore the Arcade SDK from -->
+    <add key="dotnet-eng" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-eng/nuget/v3/index.json" />
+    <!-- Feeds to use to restore dependent packages from -->
+    <add key="dotnet-public" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-public/nuget/v3/index.json" />
+    <add key="dotnet-tools" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-tools/nuget/v3/index.json" />
+  </packageSources>
+  <disabledPackageSources>
+    <clear />
+  </disabledPackageSources>
+</configuration>