Create tyk.md

Add Tyk as a service to code section

Author: zalbiraw

src/content/code/services/tyk.md

@@ -0,0 +1,6 @@
+---
+name: Tyk
+description: Tyk is a lightweight Open Source API Management Gateway that has built a Full API Life-Cycle Management around GraphQL with its own GraphQL engine that is written in Golang. Tyk supports schema stitching of multiple GraphQL and/or REST APIs through [Universal Data Graph (UDG)](https://tyk.io/docs/universal-data-graph/) as well GraphQL [Federation](https://tyk.io/docs/getting-started/key-concepts/graphql-federation/) and [Subscription](https://tyk.io/docs/getting-started/key-concepts/graphql-subscriptions/).
+url: https://tyk.io/
+github: TykTechnologies/tyk
+---