TargetFramework update,

reference updates and added tests for Viewer

Shared/Models/DataResponse.cs

@@ -0,0 +1,19 @@
+namespace OI.Metrology.Shared.Models;
+
+public class DataResponse
+{
+
+    public bool Success { get; set; }
+    public long HeaderID { get; set; }
+    public List<string> Errors { get; set; }
+    public List<string> Warnings { get; set; }
+
+    public DataResponse()
+    {
+        HeaderID = -1;
+        Success = false;
+        Errors = new List<string>();
+        Warnings = new List<string>();
+    }
+
+}