refactor(jobs): modularize background job handlers

Tiku.Infrastructure/Modules/TenantAdminModule.cs

@@ -1,8 +1,10 @@
 using Microsoft.Extensions.DependencyInjection;
 using Tiku.Application.Tenancy;
 using Tiku.Application.TenantAdmin;
+using Tiku.Application.Jobs;
 using Tiku.Infrastructure.Tenancy;
 using Tiku.Infrastructure.TenantAdmin;
+using Tiku.Infrastructure.TenantAdmin.Dashboard;
 
 namespace Tiku.Infrastructure;
 
@@ -13,6 +15,7 @@ internal static class TenantAdminModule
         services.AddScoped<ITenantAdminDirectService, TenantAdminDirectService>();
         services.AddScoped<ITenantOnboardingService, TenantOnboardingService>();
         services.AddScoped<ITenantLifecycleService, TenantLifecycleService>();
+        services.AddScoped<IBackgroundJobHandler, StatisticsAggregationJobHandler>();
         return services;
     }
-}
+}