Add Spring for GraphQL to code page (graphql#1261)

* Add Spring for GraphQL to code page

* Slight code formatting tweaks

Co-authored-by: hwillson <[email protected]>

Author: brandonbyskov

src/content/code/language-support/java-kotlin-android/server/spring-graphql.md

@@ -0,0 +1,35 @@
+---
+name: Spring for GraphQL
+description: Spring for GraphQL provides support for Spring applications built on GraphQL Java.
+url: https://spring.io/projects/spring-graphql
+github: spring-projects/spring-graphql
+---
+Spring for GraphQL provides support for Spring applications built on
+[GraphQL Java](https://www.graphql-java.com/).
+
+* It is a joint collaboration between the GraphQL Java team and Spring engineering.
+* Our shared philosophy is to provide as little opinion as we can while focusing on comprehensive support for a wide range of use cases.
+* It aims to be the foundation for all Spring, GraphQL applications.
+
+Features:
+
+* Server handling of GraphQL requests over HTTP, WebSocket, and RSocket.
+* An annotation-based programming model where @Controller components use annotations to declare handler methods with flexible method signatures to fetch the data for specific GraphQL fields. For example:
+
+```java
+@Controller
+public class GreetingController {
+
+    @QueryMapping
+    public String hello() {
+        return "Hello, world!";
+    }
+
+}
+```
+
+* Client support for executing GraphQL requests over HTTP, WebSocket, and RSocket.
+* Dedicated support for testing GraphQL requests over HTTP, WebSocket, and RSocket, as well as for testing directly against a server.
+
+To get started, check the Spring GraphQL starter on https://start.spring.io and the
+[samples](https://docs.spring.io/spring-graphql/docs/current/reference/html/#samples) in this repository.