DOCSP-43829 - Disposable IMongoClient (#241)

Author: mongoKart

source/whats-new.txt

@@ -49,6 +49,7 @@ The 3.0 driver release includes the following new features:
   `mongocsharpdriver <https://www.nuget.org/packages/mongocsharpdriver/#readme-body-tab>`__ NuGet package,
   which implements the v1.x driver API in driver versions 2.x. This package will no
   longer receive updates.
+
 - Adds the ``MongoClientSettings.TranslationOptions`` connection option, which specifies
   options for translating LINQ queries to the Query API. See :ref:`csharp-connection-options`
   for more information.
@@ -59,6 +60,16 @@ The 3.0 driver release includes the following new features:
   `Half Struct <https://learn.microsoft.com/en-us/dotnet/api/system.half?view=net-8.0>`__
   API reference page on MSDN.
 
+- The ``IMongoClient`` interface inherits the ``IDisposable`` interface. As a result, the
+  ``MongoClient`` class and other classes that implement the ``IMongoClient`` interface
+  contain a ``Dispose()`` method, which disposes of the underlying cluster and
+  connections to the MongoDB server. This implementation is experimental.
+  
+  To learn more about the ``IDisposable`` interface and use of the
+  ``Dispose()`` method, see
+  `Dispose Pattern <https://learn.microsoft.com/en-us/dotnet/standard/design-guidelines/dispose-pattern>`__
+  on MSDN.
+
 - Adds support for the ``DateOnly`` type, which represents a date value with no
   time component. This type is available in .NET 6 and later. To learn more about the
   ``DateOnly`` type, see the