Add new gateway and tool hive (graphql#1815)

Author: kamilkisiela

src/code/services/hive.md

@@ -0,0 +1,6 @@
+---
+name: Hive
+description: Hive is a fully open-source schema registry, analytics and gateway for GraphQL federation and other GraphQL APIs.
+url: https://the-guild.dev/graphql/hive
+github: graphql-hive/platform
+---

src/code/tools/hive/gateways-supergraphs/hive.md

@@ -0,0 +1,6 @@
+---
+name: Hive Gateway
+description: Hive Gateway can act as a GraphQL federation gateway or a proxy for any GraphQL service.
+url: https://the-guild.dev/graphql/hive
+github: graphql-hive/gateway
+---