Introduced GitVersion for the OnTopic.All metapackage

The `OnTopic.All` metapackage should maintain the same versioning as the OnTopic libraries that it depends upon. To help ensure that, a dependency on the `GitVersion.MsBuild` package is introduced.

Author: JeremyCaney

OnTopic.All/OnTopic.All.csproj

@@ -17,6 +17,13 @@
     <Authors>Ignia</Authors>
   </PropertyGroup>
 
+  <ItemGroup>
+    <PackageReference Include="GitVersion.MsBuild" Version="5.6.6">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+    </PackageReference>
+  </ItemGroup>
+
   <ItemGroup>
     <ProjectReference Include="..\OnTopic.AspNetCore.Mvc\OnTopic.AspNetCore.Mvc.csproj" />
     <ProjectReference Include="..\OnTopic.Data.Caching\OnTopic.Data.Caching.csproj" />