feat: add graphql-go-tools to go/server

src/content/code/language-support/go/server/wundergraph-graphql-go-tools.md

@@ -0,0 +1,25 @@
+---
+name: graphql-go-tools
+description: A collection of tools for building GraphQL Servers, Gateways, Proxy Servers and Middleware in Go.
+url: https://github.com/wundergraph/graphql-go-tools
+github: wundergraph/graphql-go-tools
+---
+graphql-go-tools implements all basic blocks for building GraphQL Servers, Gateways and Proxy Servers.
+From lexing, parsing, validation, normalization, all the way up to query planning and execution.
+
+
+It can also be understood as a GraphQL Compiler, with the ability to add your own backends.
+Just by implementing a few interfaces, you're able to teach the compiler how to talk GraphQL to any backend.
+
+
+The following backends are already implemented:
+[GraphQL](https://github.com/wundergraph/graphql-go-tools/tree/master/pkg/engine/datasource/graphql_datasource), with support for Apollo Federation / Supergraph. 
+[Databases](https://github.com/wundergraph/wundergraph/tree/main/pkg/datasources/database): PostgreSQL, MySQL, SQLite, CockroachDB, MongoDB, SQLServer,
+[OpenAPI / REST](https://github.com/wundergraph/wundergraph/tree/main/pkg/datasources/oas) and
+[Kafka](https://github.com/wundergraph/graphql-go-tools/tree/master/pkg/engine/datasource/kafka_datasource).
+
+
+To get a sense on how to implement a new backend, check out the [Static Data Source](https://github.com/wundergraph/graphql-go-tools/tree/master/pkg/engine/datasource/staticdatasource),
+as it's the simplest one.
+
+It's used in production by many enterprises for multiple years now, battle tested and actively maintained.