Add MSBuild property to identify project-specific trimmer warnings

Author: MaggieKimani1

src/Microsoft.OpenApi.Readers/Microsoft.OpenApi.Readers.csproj

@@ -8,6 +8,7 @@
         <Description>OpenAPI.NET Readers for JSON and YAML documents</Description>
         <SignAssembly>true</SignAssembly>
         <IsTrimmable Condition="$([MSBuild]::IsTargetFrameworkCompatible('$(TargetFramework)','net5.0'))">true</IsTrimmable>
+        <IsAotCompatible Condition="$([MSBuild]::IsTargetFrameworkCompatible('$(TargetFramework)','net8.0'))">true</IsAotCompatible>
         <!-- https://github.com/dotnet/sourcelink/blob/main/docs/README.md#embeduntrackedsources -->
         <EmbedUntrackedSources>true</EmbedUntrackedSources>
         <NoWarn>NU5048</NoWarn>

src/Microsoft.OpenApi/Microsoft.OpenApi.csproj

@@ -6,7 +6,8 @@
         <Version>2.0.0-preview4</Version>
         <Description>.NET models with JSON and YAML writers for OpenAPI specification</Description>
         <SignAssembly>true</SignAssembly>
-        <IsTrimmable Condition="$([MSBuild]::IsTargetFrameworkCompatible('$(TargetFramework)','net5.0'))">true</IsTrimmable>        
+        <IsTrimmable Condition="$([MSBuild]::IsTargetFrameworkCompatible('$(TargetFramework)','net5.0'))">true</IsTrimmable>
+        <IsAotCompatible Condition="$([MSBuild]::IsTargetFrameworkCompatible('$(TargetFramework)','net8.0'))">true</IsAotCompatible>
         <!-- https://github.com/dotnet/sourcelink/blob/main/docs/README.md#embeduntrackedsources -->
         <EmbedUntrackedSources>true</EmbedUntrackedSources>
         <NoWarn>NU5048</NoWarn>