Product info mutation (#14)

* Add mutation for product info

* Upgrade to apollo 3

src/resolvers/interiors-resolver.ts

@@ -1,8 +1,7 @@
-import { IResolverObject } from 'graphql-tools';
 import { InteriorAPI } from '../datasources/interior-api';
 import { InteriorsFilterInput } from '../types/interior-types';
 
-const Interior: IResolverObject = {};
+const Interior = {};
 
 async function getInteriors(_, args: InteriorsFilterInput, { dataSources }) {
   return (<InteriorAPI>dataSources.interiorApi).getInteriors(args.filter);