Replace EnvelopeGenerator.Service with Service_legacy

The project `EnvelopeGenerator.Service` has been removed from the solution and replaced with a new project, `EnvelopeGenerator.Service_legacy`.

Updated build configuration mappings to reflect the addition of `Service_legacy` and the removal of `Service`. Adjusted project nesting to place `Service_legacy` under the same parent as the removed `Service`.

EnvelopeGenerator.Service_legacy/LogProvider.vb

@@ -0,0 +1,34 @@
+Imports Quartz.Logging
+
+Public Class LogProvider
+    Implements ILogProvider
+
+    Private ReadOnly Logger As DigitalData.Modules.Logging.Logger
+
+    Public Sub New(Logger As DigitalData.Modules.Logging.Logger)
+        MyBase.New()
+        Me.Logger = Logger
+    End Sub
+
+    Public Function OpenNestedContext(message As String) As IDisposable Implements ILogProvider.OpenNestedContext
+        Throw New NotImplementedException()
+    End Function
+
+    Public Function OpenMappedContext(key As String, value As Object, Optional destructure As Boolean = False) As IDisposable Implements ILogProvider.OpenMappedContext
+        Throw New NotImplementedException()
+    End Function
+
+    Private Function GetLogger(name As String) As Logger Implements ILogProvider.GetLogger
+        Return Function(level, func, exception, parameters)
+                   If exception IsNot Nothing Then
+                       Logger.Error(exception)
+                   ElseIf level >= LogLevel.Debug AndAlso func IsNot Nothing Then
+                       Logger.Debug(func(), parameters)
+                   ElseIf level >= LogLevel.Info AndAlso func IsNot Nothing Then
+                       Logger.Info(func(), parameters)
+                   End If
+
+                   Return True
+               End Function
+    End Function
+End Class