Add license notice for Sonar enterprise C# and VBNET analysers

THIRD-PARTY-NOTICES

@@ -11,6 +11,24 @@ https://github.com/SonarSource/sonarlint-visualstudio
 
 The attached notices are provided for information only.
 
+License notice for Sonar C# and VB .NET Enterprise Plugins
+----------------------------------------------------------
+
+Copyright (C) 2012-2024 SonarSource SA
+All rights reserved.
+mailto:info AT sonarsource DOT com
+
+This software includes the sonar-csharp-enterprise-plugin and sonar-vbnet-enterprise-plugin,
+a proprietary plugin owned by SonarSource SA. These plugins are embedded within this software
+and are only licensed for use as an integrated part of this application.
+
+Users of this software are granted a non-transferable, non-sublicensable, limited license
+to use the aforementioned plugins solely as part of this application. Any use, reproduction,
+distribution, or modification of the plugin outside the scope of this application is
+strictly prohibited.
+
+
+
 License notice for Git Credential Manager for Windows
 -----------------------------------------------------