Prepare Data History Provider 2.7 integration update

- modularize Citrix and agent integrations and add remote desktop endpoints
- extend ticket overview, ticket links, token validation, and staged relation handling
- update configuration, licensing, project, signing, and publish artifacts

F4SD-Cockpit-ServerCore/DataSources/IRemoteDesktopManager.cs

@@ -0,0 +1,16 @@
+using C4IT.FASD.Base;
+using System;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace C4IT.DataHistoryProvider.Base.DataSources
+{
+    public interface IRemoteDesktopManager<TRemoteConnectionInfo, TClientInfo, TRemoteConnectionStatus>
+    {
+        Task<TRemoteConnectionInfo> InitiateConnectionOfClient(TClientInfo clientInfos, bool isElevated, CancellationToken token = default);
+        Task TerminateConnection(Guid connectionId);
+        Task<TRemoteConnectionStatus> GetConnectionStatus(Guid connectionId);
+        bool IsActive();
+        Task<HealthInformation> GetHealthInfo();
+    }
+}