Mark public APIs as experimental and make versioning follow (#6812)

Author: Evangelink

src/Platform/Microsoft.Testing.Extensions.AzureFoundry/Microsoft.Testing.Extensions.AzureFoundry.csproj

@@ -3,6 +3,9 @@
   <PropertyGroup>
     <TargetFrameworks>netstandard2.0;$(SupportedNetFrameworks)</TargetFrameworks>
     <IsShipping>false</IsShipping>
+    <VersionPrefix>1.0.0</VersionPrefix>
+    <PreReleaseVersionLabel>alpha</PreReleaseVersionLabel>
+    <SuppressFinalPackageVersion>true</SuppressFinalPackageVersion>
   </PropertyGroup>
 
   <!-- NuGet package layout -->
@@ -23,6 +26,7 @@
   <ItemGroup>
     <PackageReference Include="Azure.AI.OpenAI" />
     <PackageReference Include="Microsoft.Extensions.AI.OpenAI" />
+    <PackageReference Include="Polyfill" PrivateAssets="all" />
   </ItemGroup>
 
   <ItemGroup>

src/Platform/Microsoft.Testing.Extensions.AzureFoundry/TestApplicationBuilderExtensions.cs

@@ -1,4 +1,4 @@
-// Copyright (c) Microsoft Corporation. All rights reserved.
+// Copyright (c) Microsoft Corporation. All rights reserved.
 // Licensed under the MIT license. See LICENSE file in the project root for full license information.
 
 using Microsoft.Testing.Platform.AI;
@@ -11,6 +11,7 @@ namespace Microsoft.Testing.Extensions.AzureFoundry;
 /// <summary>
 /// Extension methods for configuring Azure Foundry services.
 /// </summary>
+[Experimental("TPEXP", UrlFormat = "https://aka.ms/testingplatform/diagnostics#{0}")]
 public static class TestApplicationBuilderExtensions
 {
     /// <summary>

src/Platform/Microsoft.Testing.Platform.AI/ChatClientProviderExtensions.cs

@@ -11,6 +11,7 @@ namespace Microsoft.Testing.Platform.AI;
 /// <summary>
 /// Extension methods for chat client provider.
 /// </summary>
+[Experimental("TPEXP", UrlFormat = "https://aka.ms/testingplatform/diagnostics#{0}")]
 public static class ChatClientProviderExtensions
 {
     /// <summary>

src/Platform/Microsoft.Testing.Platform.AI/Microsoft.Testing.Platform.AI.csproj

@@ -3,6 +3,9 @@
   <PropertyGroup>
     <TargetFrameworks>$(SupportedNetFrameworks);netstandard2.0</TargetFrameworks>
     <IsShipping>false</IsShipping>
+    <VersionPrefix>1.0.0</VersionPrefix>
+    <PreReleaseVersionLabel>alpha</PreReleaseVersionLabel>
+    <SuppressFinalPackageVersion>true</SuppressFinalPackageVersion>
   </PropertyGroup>
 
   <ItemGroup>