Fix Unit Test Case01.04

[sophiadt]

Fix Unit Test Case01.04

test Case0.104 gave Uncaught ReferenceError: require is not defined

This is because require is a Node.js function but the package type is defined as module in package.json, so we have to use ES modules like import and export. But then Jest wouldn't be able to parse the file so JSResolverOCHTTPSTemplate, output.resolver.graphql.cjs, testLib were changed to .mjs files to mark those files as ES modules.

Changes:

• changed JSResolverOCHTTPSTemplate, output.resolver.graphql.cjs, testLib to .mjs
• changed imports to

import pkg from './output.resolver.graphql.js';
const {resolveGraphDBQueryFromAppSyncEvent, refactorGremlinqueryOutput} = pkg;

• added export default { resolveGraphDBQueryFromAppSyncEvent, resolveGraphDBQueryFromApolloQueryEvent } so it works with the pkg import
• added "type": "module", in the package.json files for Lambda4AppSyncHTTP and Lambda4AppSyncSDK in the templates folder