feat(package): add es module entry point

Author: David Bailey

index.mjs

@@ -0,0 +1,4 @@
+import HTMLReactParser from './index.js';
+
+export default HTMLReactParser;
+export const { domToReact, htmlToDOM, attributesToProps } = HTMLReactParser;

package.json

@@ -4,6 +4,7 @@
   "description": "HTML to React parser.",
   "author": "Mark <[email protected]>",
   "main": "index.js",
+  "module": "index.mjs",
   "scripts": {
     "benchmark": "node benchmark",
     "build": "rollup --config",