Add github metadata file for smallrye-graphql to fix github actions issue (#658)

Author: andrewmcgivery

implementations/smallrye-graphql/github_metadata.json

@@ -0,0 +1,5 @@
+{
+  "description": "Implementation for MicroProfile GraphQL",
+  "stargazerCount": 160,
+  "lastRelease": "2025-01-27T00:00:00Z"
+}