Specify CommonJS and ESM entry points

Author: Josh Biddick

package-lock.json

@@ -1,11 +1,12 @@
 {
   "name": "@ricado/version-file",
-  "version": "1.3.0",
+  "version": "1.3.1",
   "description": "Generates a verson file with your apps name, version and build date",
   "repository": {
     "url": "https://github.com/ricado-group/js-version-file.git"
   },
-  "main": "lib/index.js",
+  "main": "lib-commonjs/index.js",
+  "module": "lib/index.js",
   "typings": "dist/version-file.d.ts",
   "scripts": {
     "build": "heft test --clean",