Prepare playground apps to allow testing (#5080)

This PR has changes to prepare the `playground/` apps to be run as part of future tests in `Aspire.Playground.Tests`. The changes follow these broad patterns:

- remove all the per-project `Directory.Build.{props,targets}`, and instead of these ..
    - .. add root `Directory.Build.{props,targets}` and use `Aspire.RepoTesting.*`
    - And update all the playground projects to use `AspireProjectOrPackageReference` instead of `ProjectReference`
- `Aspire.Hosting.Testing` expects to identify AppHost assemblies by a name ending in `.AppHost`.
    - rename some projects that don't follow that convention.

- Update the apps to use `Aspire.RepoTesting*` which allows building outside of repo.

- Address review feedbacks from @ eerhardt

Author: radical

Aspire.sln

@@ -9,14 +9,13 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <Compile Include="$(SharedDir)KnownResourceNames.cs" Link="KnownResourceNames.cs" />
+    <Compile Include="..\..\KnownResourceNames.cs" Link="KnownResourceNames.cs" />
   </ItemGroup>
 
   <ItemGroup>
-    <ProjectReference Include="..\..\..\src\Aspire.Dashboard\Aspire.Dashboard.csproj" />
-    <ProjectReference Include="..\..\..\src\Aspire.Hosting.AWS\Aspire.Hosting.AWS.csproj" IsAspireProjectResource="false" />    
-    <ProjectReference Include="..\..\..\src\Aspire.Hosting.AppHost\Aspire.Hosting.AppHost.csproj" IsAspireProjectResource="false" />
-    
+    <AspireProjectOrPackageReference Include="Aspire.Hosting.AWS" />
+    <AspireProjectOrPackageReference Include="Aspire.Hosting.AppHost" />
+
     <ProjectReference Include="..\Frontend\Frontend.csproj" />
   </ItemGroup>
 

playground/AWS/AWS.AppHost/AWS.AppHost.csproj

@@ -20,8 +20,8 @@
   </ItemGroup>
 
   <ItemGroup>
-    <ProjectReference Include="..\..\..\src\Microsoft.Extensions.ServiceDiscovery.Dns\Microsoft.Extensions.ServiceDiscovery.Dns.csproj" />
-    <ProjectReference Include="..\..\..\src\Microsoft.Extensions.ServiceDiscovery\Microsoft.Extensions.ServiceDiscovery.csproj" />
+    <AspireProjectOrPackageReference Include="Microsoft.Extensions.ServiceDiscovery.Dns" />
+    <AspireProjectOrPackageReference Include="Microsoft.Extensions.ServiceDiscovery" />
   </ItemGroup>
 
 </Project>

playground/AWS/AWS.AppHost/Directory.Build.props

@@ -10,14 +10,13 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <Compile Include="$(SharedDir)KnownResourceNames.cs" Link="KnownResourceNames.cs" />
+    <Compile Include="..\..\KnownResourceNames.cs" Link="KnownResourceNames.cs" />
   </ItemGroup>
 
   <ItemGroup>
-    <ProjectReference Include="..\..\..\src\Aspire.Dashboard\Aspire.Dashboard.csproj" />
-
-    <ProjectReference Include="..\..\..\src\Aspire.Hosting.Azure.EventHubs\Aspire.Hosting.Azure.EventHubs.csproj" IsAspireProjectResource="false" />
-    <ProjectReference Include="..\..\..\src\Aspire.Hosting.Azure.Storage\Aspire.Hosting.Azure.Storage.csproj" IsAspireProjectResource="false" />
+    <AspireProjectOrPackageReference Include="Aspire.Hosting.AppHost" />
+    <AspireProjectOrPackageReference Include="Aspire.Hosting.Azure.EventHubs" />
+    <AspireProjectOrPackageReference Include="Aspire.Hosting.Azure.Storage" />
 
     <ProjectReference Include="..\EventHubsApi\EventHubsApi.csproj" />
     <ProjectReference Include="..\EventHubsConsumer\EventHubsConsumer.csproj" />

playground/AWS/AWS.AppHost/Directory.Build.targets

@@ -8,7 +8,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <ProjectReference Include="..\..\..\src\Components\Aspire.Azure.Messaging.EventHubs\Aspire.Azure.Messaging.EventHubs.csproj" />
+    <AspireProjectOrPackageReference Include="Aspire.Azure.Messaging.EventHubs" />
     <ProjectReference Include="..\..\Playground.ServiceDefaults\Playground.ServiceDefaults.csproj" />
   </ItemGroup>
 

playground/AWS/AWS.ServiceDefaults/AWS.ServiceDefaults.csproj

@@ -8,8 +8,8 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <ProjectReference Include="..\..\..\src\Components\Aspire.Azure.Messaging.EventHubs\Aspire.Azure.Messaging.EventHubs.csproj" />
-    <ProjectReference Include="..\..\..\src\Components\Aspire.Azure.Storage.Blobs\Aspire.Azure.Storage.Blobs.csproj" />
+    <AspireProjectOrPackageReference Include="Aspire.Azure.Messaging.EventHubs" />
+    <AspireProjectOrPackageReference Include="Aspire.Azure.Storage.Blobs" />
     <ProjectReference Include="..\..\Playground.ServiceDefaults\Playground.ServiceDefaults.csproj" />
   </ItemGroup>