install Microsoft.EntityFrameworkCore.Design for Api layer.

Author: omid-ahmadpour

src/Web/Api/CleanTemplate.Api.csproj

@@ -13,6 +13,11 @@
 
   <ItemGroup>
 
+    <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="6.0.0">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+    </PackageReference>
+    
     <PackageReference Include="Microsoft.VisualStudio.Azure.Containers.Tools.Targets" Version="1.14.0" />
   </ItemGroup>