Add satellite assemblies to Microsoft.NETCore.Compilers

Add satellite assemblies for the Roslyn assemblies that we ship in
Microsoft.NETCore.Compiler.nupkg. This includes
Microsoft.CodeAnalysis.dll, Microsoft.CodeAnalysis.CSharp.dll,
Microsoft.CodeAnalysis.VisualBasic.dll, and
Microsoft.Build.Tasks.CodeAnalysis.dll.

This increases the resulting .nupkg size from about 8,988KB to about
12,000KB.

src/NuGet/Microsoft.NETCore.Compilers.nuspec

@@ -48,6 +48,12 @@
     <file src="Exes/VBCSCompiler/netcoreapp2.0/publish/VBCSCompiler.deps.json" target="tools/bincore" />
     <file src="Exes/VBCSCompiler/netcoreapp2.0/publish/VBCSCompiler.runtimeconfig.json" target="tools/bincore" />
 
+    <!-- Satellite assemblies -->
+    <file src="Dlls\MSBuildTask\**\Microsoft.Build.Tasks.CodeAnalysis.resources.dll" target="tools" />
+    <file src="Dlls\CodeAnalysis\**\Microsoft.CodeAnalysis.resources.dll" target="tools/bincore" />
+    <file src="Dlls\CSharpCodeAnalysis\**\Microsoft.CodeAnalysis.CSharp.resources.dll" target="tools/bincore" />
+    <file src="Dlls\BasicCodeAnalysis\**\Microsoft.CodeAnalysis.VisualBasic.resources.dll" target="tools/bincore" />
+
     <!-- References that are either not in the target framework or are a higher version -->
     <file src="Exes\csc\netcoreapp2.0\publish\System.*.dll" target="tools\bincore" />
     <file src="Exes\csc\netcoreapp2.0\publish\runtimes\**" target="tools\bincore\runtimes" />