feat: implemented Mediator and added dialog service

WotBlitzStatisticsPro.Blazor/WotBlitzStatisticsPro.Blazor.csproj

@@ -6,6 +6,8 @@
   </PropertyGroup>
 
   <ItemGroup>
+    <PackageReference Include="MediatR" Version="9.0.0" />
+    <PackageReference Include="MediatR.Extensions.Microsoft.DependencyInjection" Version="9.0.0" />
     <PackageReference Include="Microsoft.AspNetCore.Components.WebAssembly" Version="5.0.4" />
     <PackageReference Include="Microsoft.AspNetCore.Components.WebAssembly.DevServer" Version="5.0.4" PrivateAssets="all" />
     <PackageReference Include="Radzen.Blazor" Version="3.2.0" />
@@ -16,4 +18,8 @@
     <ServiceWorker Include="wwwroot\service-worker.js" PublishedContent="wwwroot\service-worker.published.js" />
   </ItemGroup>
 
+  <ItemGroup>
+    <Folder Include="Messages\" />
+  </ItemGroup>
+
 </Project>