Add campaign manager

Hcs.WebApp/BackgroundServices/CampaignManagers/ManagerFactory.cs

@@ -0,0 +1,21 @@
+using Hcs.WebApp.Data.Hcs;
+
+namespace Hcs.WebApp.BackgroundServices.CampaignManagers
+{
+    public class ManagerFactory(OperationExecutionState state, IServiceScopeFactory scopeFactory)
+    {
+        protected readonly OperationExecutionState state = state;
+        protected readonly IServiceScopeFactory scopeFactory = scopeFactory;
+
+        public IManager CreateManager(Campaign campaign)
+        {
+            switch (campaign.Type)
+            {
+                case Campaign.CampaignType.ExportRequiredRegistryElements_15_7_0_1:
+                    return new ExportRequiredRegistryElementsManager_15_7_0_1(state, scopeFactory, campaign);
+            }
+
+            throw new NotImplementedException();
+        }
+    }
+}