Replace EF.Tools with EF.Design package

Author: selfdocumentingcode

Kattbot.Data.Migrations/Kattbot.Data.Migrations.csproj

@@ -18,7 +18,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.EntityFrameworkCore.Tools" Version="8.0.8">
+    <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="8.0.8">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>