Refactor EnvelopeModel for DI and logging improvements

Removed BaseModel inheritance and switched to constructor injection for MSSQLServer and ILogger dependencies. Updated using directives and replaced Logger.Error with Logger.LogError. Removed obsolete State-based constructor.

EnvelopeGenerator.ServiceHost/Jobs/EnvelopeModel.cs

@@ -1,15 +1,11 @@
-using DigitalData.Modules.Base;
-using EnvelopeGenerator.Domain.Constants;
+using DigitalData.Modules.Database;
 using EnvelopeGenerator.Domain.Entities;
+using EnvelopeGenerator.ServiceHost.Extensions;
 
 namespace EnvelopeGenerator.ServiceHost.Jobs;
 
-public class EnvelopeModel : BaseModel
+public class EnvelopeModel(MSSQLServer Database, ILogger Logger)
 {
-    public EnvelopeModel(State state) : base(state)
-    {
-    }
-
     public Envelope? GetById(int envelopeId)
     {
         try
@@ -35,7 +31,7 @@ public class EnvelopeModel : BaseModel
         }
         catch (Exception ex)
         {
-            Logger.Error(ex);
+            Logger.LogError(ex);
             return null;
         }
     }