add GraphQL template

src/functions-templates/js/apollo-graphql/apollo-graphql.js

@@ -0,0 +1,22 @@
+const { ApolloServer, gql } = require('apollo-server-lambda')
+
+const typeDefs = gql`
+  type Query {
+    hello: String
+  }
+`
+
+const resolvers = {
+  Query: {
+    hello: (root, args, context) => {
+      return 'Hello, world!'
+    }
+  }
+}
+
+const server = new ApolloServer({
+  typeDefs,
+  resolvers
+})
+
+exports.handler = server.createHandler()