Merge pull request #976 from rivantsov/reAddNGraphQL_link

Re-add NGraphQL link in Code page (for .NET)

Author: orta

src/content/code/language-support/c-net/server/ngraphql.md

@@ -0,0 +1,6 @@
+---
+name: NGraphQL
+description: A set of packages for implementing high-performant GraphQL servers in .NET. Faithful implementation of official 2018 Specification. Features batched execution support (aka Data Loader); support for custom scalars; HTTP server based on ASP.NET Core; parsed query cache; modular API construction (equivalent of schema stiching); full introspection support; runtime metrics and quotas.  
+url: https://github.com/rivantsov/ngraphql
+github: rivantsov/ngraphql
+---