Add AOT target for Key Vault SDK

Resolves Azure#38500

sdk/keyvault/Azure.Security.KeyVault.Secrets/aot/Azure.Security.KeyVault.Secrets.Aot.csproj

@@ -0,0 +1,18 @@
+<Project Sdk="Microsoft.NET.Sdk">
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net7.0</TargetFramework>
+    <PublishAot>true</PublishAot>
+    <TrimmerSingleWarn>false</TrimmerSingleWarn>
+    <IsClientLibrary>false</IsClientLibrary>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <TrimmerRootAssembly Include="Azure.Security.KeyVault.Secrets" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="../../../core/Azure.Core/src/Azure.Core.csproj" />
+    <ProjectReference Include="../src/Azure.Security.KeyVault.Secrets.csproj" />
+  </ItemGroup>
+</Project>

sdk/keyvault/Azure.Security.KeyVault.Secrets/aot/Directory.Build.targets

@@ -0,0 +1,22 @@
+<Project>
+
+  <PropertyGroup>
+    <TargetFrameworks Condition="'$(TargetFramework)' != ''">$(TargetFramework)</TargetFrameworks>
+  </PropertyGroup>
+
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory).., Directory.Build.targets))\Directory.Build.targets"
+          Condition="'$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory).., Directory.Build.targets))' != ''" />
+
+  <!-- Canonicalize NoWarn: https://github.com/dotnet/runtime/issues/91965 -->
+  <ItemGroup>
+    <_NoWarn Include="$(NoWarn)" />
+  </ItemGroup>
+  <PropertyGroup>
+    <NoWarn>@(_NoWarn)</NoWarn>
+  </PropertyGroup>
+
+  <!-- Disable targets not necessary for samples -->
+  <Target Name="ValidateTargetFrameworks" />
+  <Target Name="VerifyProjectReferencesReferences" />
+
+</Project>

sdk/keyvault/Azure.Security.KeyVault.Secrets/aot/Program.cs

@@ -0,0 +1,4 @@
+// Copyright (c) Microsoft Corporation. All rights reserved.
+// Licensed under the MIT License.
+
+System.Console.WriteLine("Hello, world!");