feat: add GraphQL schema extension with Apollo links

Author: DaleSeo

github.graphql

@@ -0,0 +1,8 @@
+extend schema
+  @link(url: "https://specs.apollo.dev/federation/v2.10", import: ["@key"])
+  @link(
+    url: "https://specs.apollo.dev/connect/v0.1"
+    import: ["@connect", "@source"]
+  )
+
+type Query {}