add empty Microsoft.Extensions.DataIngestion project so I can send next PRs in parallel

Author: adamsitnik

src/Libraries/Microsoft.Extensions.DataIngestion/Microsoft.Extensions.DataIngestion.csproj

@@ -0,0 +1,17 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFrameworks>$(TargetFrameworks);netstandard2.0</TargetFrameworks>
+    <RootNamespace>Microsoft.Extensions.DataIngestion</RootNamespace>
+    
+    <!-- we are not ready to publish yet -->
+    <IsPackable>false</IsPackable>
+    <Stage>preview</Stage>
+    <EnablePackageValidation>false</EnablePackageValidation> 
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\Microsoft.Extensions.DataIngestion.Abstractions\Microsoft.Extensions.DataIngestion.Abstractions.csproj" />
+  </ItemGroup>
+
+</Project>

test/Libraries/Microsoft.Extensions.DataIngestion.Tests/Microsoft.Extensions.DataIngestion.Tests.csproj

@@ -6,7 +6,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <ProjectReference Include="..\..\..\src\Libraries\Microsoft.Extensions.DataIngestion.Abstractions\Microsoft.Extensions.DataIngestion.Abstractions.csproj" />
+    <ProjectReference Include="..\..\..\src\Libraries\Microsoft.Extensions.DataIngestion\Microsoft.Extensions.DataIngestion.csproj" />
   </ItemGroup>
 
 </Project>