Add Microsoft.SemanticKernel packages directly into the repo

Author: MackinnonBuck

src/ProjectTemplates/AdditionalPackages/.gitignore

@@ -0,0 +1,3 @@
+# Temporarily directly include packages from Microsoft.SemanticKernel until
+# the sqlite-vec integration ships publicly.
+!*.nupkg

src/ProjectTemplates/AdditionalPackages/Microsoft.Extensions.VectorData.Abstractions.9.0.0-preview.1.25229.1.nupkg

@@ -12,6 +12,7 @@
     <!-- Clear to avoid inheriting from the repo root NuGet.config -->
     <clear />
     <add key="local-shipping" value="${ArtifactsShippingPackagesDir}" />
+    <add key="additional-packages" value="${AdditionalPackagesDir}" />
     <add key="nuget" value="https://api.nuget.org/v3/index.json" />
   </packageSources>
   <disabledPackageSources>

src/ProjectTemplates/AdditionalPackages/Microsoft.SemanticKernel.Abstractions.1.49.0.nupkg

@@ -95,6 +95,7 @@ public async Task RestoreProjectAsync(Project project)
         var restoreResult = await new DotNetCommand("restore")
             .WithWorkingDirectory(project.StartupProjectFullPath)
             .WithEnvironmentVariable("LOCAL_SHIPPING_PATH", WellKnownPaths.LocalShippingPackagesPath)
+            .WithEnvironmentVariable("ADDITIONAL_PACKAGES_PATH", WellKnownPaths.AdditionalPackagesPath)
             .WithEnvironmentVariable("NUGET_PACKAGES", WellKnownPaths.NuGetPackagesPath)
             .ExecuteAsync(OutputHelper);
         restoreResult.AssertSucceeded();

src/ProjectTemplates/AdditionalPackages/Microsoft.SemanticKernel.Connectors.AzureAISearch.1.49.0-preview.nupkg

@@ -19,6 +19,7 @@ internal static class WellKnownPaths
     public static readonly string TemplateInstallNuGetConfigPath;
     public static readonly string TemplateTestNuGetConfigPath;
     public static readonly string LocalShippingPackagesPath;
+    public static readonly string AdditionalPackagesPath;
     public static readonly string NuGetPackagesPath;
 
     static WellKnownPaths()
@@ -40,6 +41,7 @@ static WellKnownPaths()
             "Release";
 #endif
         LocalShippingPackagesPath = Path.Combine(RepoRoot, "artifacts", "packages", BuildConfigurationFolder, "Shipping");
+        AdditionalPackagesPath = Path.Combine(TemplateFeedLocation, "AdditionalPackages");
         NuGetPackagesPath = Path.Combine(TemplateSandboxOutputRoot, "packages");
     }