DOCSP-38518: C# language landing page (#171)

* DOCSP-38518: C# language landing page

* image edits

* typo

* change to 2 cols

* more ways to learn

* reformat entity framework

* update picture

* .net logo

* 1 driver format

* reformat

* card size

* card style

* review feedback

* file name

Author: norareidy

source/images/CSharp.svg

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+:template: product-landing
+:pl-max-width-paragraphs:
+:noprevnext:
+
+===============
+MongoDB with C#
+===============
+
+.. introduction::
+
+   Leverage C# to develop applications based on the .NET framework. MongoDB provides
+   both a .NET/C# driver and an Entity Framework integration for you to take advantage of
+   using MongoDB in this general-purpose, multi-paradigm programming language.
+
+   .. button:: Get started with the .NET/C# Driver
+      :uri: https://www.mongodb.com/docs/drivers/csharp/current/
+
+.. image:: /images/CSharp.svg
+   :alt: C# landing page hero image
+
+Driver
+------
+
+Provides a high-level API for working with MongoDB databases consistent with
+other MongoDB language drivers.
+
+`C# Driver Documentation → <https://www.mongodb.com/docs/drivers/csharp/current/>`__
+
+Framework
+---------
+
+`Get Started With the Entity Framework Core Provider → <https://www.mongodb.com/docs/entity-framework/current/>`__
+
+Libraries and Extensions
+------------------------
+
+.. card-group::
+   :columns: 2
+   :style: center-content
+
+   .. card::
+      :headline: .NET Analyzer 
+      :url: https://www.mongodb.com/docs/mongodb-analyzer/current/
+      :icon: /images/icons/microsoft-net.svg
+      :icon-alt: Entity Framework and .NET icon
+
+   .. card::
+      :headline: OData Support
+      :url: https://www.nuget.org/packages/MongoDB.AspNetCore.OData/
+      :icon: /images/icons/odata-logo-96.png
+      :icon-alt: OData icon
+
+
+More Ways to Learn
+------------------
+
+.. card-group::
+   :columns: 3
+   :style: large-icon
+
+   .. card::
+      :headline: View C# developer resources
+      :url: https://www.mongodb.com/developer/languages/csharp/
+      :icon: /images/technical-mdb-devhub.svg
+      :icon-alt: DevHub icon
+
+      C# Resources  →
+
+   .. card::
+      :headline: Learn about C# and MongoDB
+      :url: https://learn.mongodb.com/learning-paths/using-mongodb-with-c-sharp
+      :icon: /images/icons/university.svg
+      :icon-alt: Learn icon
+
+      C# Developer Path →
+  
+   .. card::
+      :headline: Join forums and discussions
+      :url: https://www.mongodb.com/community/
+      :icon: /images/general-content-community.svg
+      :icon-alt: Community icon
+
+      MongoDB Community →