DOCSP-43582 - Half type (#238)

Author: mongoKart

source/whats-new.txt

@@ -50,6 +50,12 @@ The 3.0 driver release includes the following new features:
   which implements the v1.x driver API in driver versions 2.x. This package will no
   longer receive updates.
 
+- Adds support for the ``Half`` type, which represents a half-precision floating-point number.
+  This type is available in .NET 5 and later.
+  To learn more about the ``Half`` type, see the
+  `Half Struct <https://learn.microsoft.com/en-us/dotnet/api/system.half?view=net-8.0>`__
+  API reference page on MSDN. 
+
 .. _csharp-version-2.28:
 
 What's New in 2.28