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/Modules/Agent/DTOs/AgentErrorDto.cs

@@ -0,0 +1,13 @@
+using Newtonsoft.Json;
+
+namespace C4IT.DataHistoryProvider.Base.Modules.Agent.DTOs
+{
+    public class AgentErrorDto
+    {
+        [JsonProperty("code")]
+        public string Code { get; set; }
+
+        [JsonProperty("message")]
+        public string Message { get; set; }
+    }
+}

F4SD-Cockpit-ServerCore/Modules/Agent/DTOs/AgentLogonResultDto.cs

@@ -0,0 +1,22 @@
+using Newtonsoft.Json;
+
+namespace C4IT.DataHistoryProvider.Base.Modules.Agent.DTOs
+{
+    public class AgentLogonResultDto
+    {
+        [JsonProperty("access_token")]
+        public string AccessToken { get; set; }
+
+        [JsonProperty("expires_in")]
+        public int ExpiresIn { get; set; }
+
+        [JsonProperty("token_type")]
+        public string TokenType { get; set; }
+
+        [JsonProperty("scope")]
+        public string Scope { get; set; }
+
+        [JsonProperty("remote_ip")]
+        public string RemoteIp { get; set; }
+    }
+}