Authentication refactor (#284)

Co-authored-by: Rea Rustagi <[email protected]>
(cherry picked from commit bf67d80)

Author: mongoKart

source/fundamentals.txt

@@ -30,6 +30,7 @@ Fundamentals
    In-Use Encryption </fundamentals/encrypt-fields>
    Search Geospatially </fundamentals/geo>
    Replica Set Operations </fundamentals/read-write-configuration>
+   OData </fundamentals/odata>
 
 - :ref:`Connecting to MongoDB <csharp-connection>`
 - :ref:`csharp-db-coll`
@@ -49,4 +50,4 @@ Fundamentals
 - :ref:`csharp-time-series`
 - :ref:`Encrypt Fields <csharp-fle>`
 - :ref:`csharp-geo`
-- :ref:`csharp-read-write-config`
+- :ref:`csharp-read-write-config`