C#: Add relevant stubs.

Author: michaelnebel

csharp/ql/test/resources/stubs/Stub.System.Data.SQLite.Core.NetStandard/1.0.116/Stub.System.Data.SQLite.Core.NetStandard.csproj

@@ -0,0 +1,12 @@
+<Project Sdk="Microsoft.NET.Sdk">
+  <PropertyGroup>
+    <TargetFramework>net6.0</TargetFramework>
+    <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
+    <OutputPath>bin\</OutputPath>
+    <AppendTargetFrameworkToOutputPath>false</AppendTargetFrameworkToOutputPath>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="../../_frameworks/Microsoft.NETCore.App/Microsoft.NETCore.App.csproj" />
+  </ItemGroup>
+</Project>

csharp/ql/test/resources/stubs/Stub.System.Data.SQLite.Core.NetStandard/1.0.116/System.Data.SQLite.cs

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+<Project Sdk="Microsoft.NET.Sdk">
+  <PropertyGroup>
+    <TargetFramework>net6.0</TargetFramework>
+    <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
+    <OutputPath>bin\</OutputPath>
+    <AppendTargetFrameworkToOutputPath>false</AppendTargetFrameworkToOutputPath>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="../../Stub.System.Data.SQLite.Core.NetStandard/1.0.116/Stub.System.Data.SQLite.Core.NetStandard.csproj" />
+    <ProjectReference Include="../../_frameworks/Microsoft.NETCore.App/Microsoft.NETCore.App.csproj" />
+  </ItemGroup>
+</Project>

csharp/ql/test/resources/stubs/System.Data.SQLite.Core/1.0.116/System.Data.SQLite.Core.csproj

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+// This file contains auto-generated code.
+
+namespace System
+{
+    namespace Data
+    {
+        namespace SQLite
+        {
+            namespace EF6
+            {
+                // Generated from `System.Data.SQLite.EF6.SQLiteProviderFactory` in `System.Data.SQLite.EF6, Version=1.0.116.0, Culture=neutral, PublicKeyToken=db937bc2d44ff139`
+                public class SQLiteProviderFactory : System.Data.Common.DbProviderFactory, System.IDisposable, System.IServiceProvider
+                {
+                    public override System.Data.Common.DbCommand CreateCommand() => throw null;
+                    public override System.Data.Common.DbCommandBuilder CreateCommandBuilder() => throw null;
+                    public override System.Data.Common.DbConnection CreateConnection() => throw null;
+                    public override System.Data.Common.DbConnectionStringBuilder CreateConnectionStringBuilder() => throw null;
+                    public override System.Data.Common.DbDataAdapter CreateDataAdapter() => throw null;
+                    public override System.Data.Common.DbParameter CreateParameter() => throw null;
+                    public void Dispose() => throw null;
+                    public object GetService(System.Type serviceType) => throw null;
+                    public static System.Data.SQLite.EF6.SQLiteProviderFactory Instance;
+                    public SQLiteProviderFactory() => throw null;
+                    // ERR: Stub generator didn't handle member: ~SQLiteProviderFactory
+                }
+
+            }
+        }
+    }
+}

csharp/ql/test/resources/stubs/System.Data.SQLite.EF6/1.0.116/System.Data.SQLite.EF6.cs

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+<Project Sdk="Microsoft.NET.Sdk">
+  <PropertyGroup>
+    <TargetFramework>net6.0</TargetFramework>
+    <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
+    <OutputPath>bin\</OutputPath>
+    <AppendTargetFrameworkToOutputPath>false</AppendTargetFrameworkToOutputPath>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="../../_frameworks/Microsoft.NETCore.App/Microsoft.NETCore.App.csproj" />
+  </ItemGroup>
+</Project>

csharp/ql/test/resources/stubs/System.Data.SQLite.EF6/1.0.116/System.Data.SQLite.EF6.csproj

@@ -0,0 +1,14 @@
+<Project Sdk="Microsoft.NET.Sdk">
+  <PropertyGroup>
+    <TargetFramework>net6.0</TargetFramework>
+    <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
+    <OutputPath>bin\</OutputPath>
+    <AppendTargetFrameworkToOutputPath>false</AppendTargetFrameworkToOutputPath>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="../../System.Data.SQLite.Core/1.0.116/System.Data.SQLite.Core.csproj" />
+    <ProjectReference Include="../../System.Data.SQLite.EF6/1.0.116/System.Data.SQLite.EF6.csproj" />
+    <ProjectReference Include="../../_frameworks/Microsoft.NETCore.App/Microsoft.NETCore.App.csproj" />
+  </ItemGroup>
+</Project>