Add sample in mongo and sql layers

Core.Blueprint.DAL.Mongo/Entities/Requests/SampleRequest.cs

@@ -0,0 +1,9 @@
+namespace Core.Blueprint.DAL.Mongo.Entities.Requests
+{
+    public class SampleRequest
+    {
+        public string Name { get; set; } = null!;
+
+        public string? Description { get; set; }
+    }
+}