feat: Adding token creator and a parser

package.json

@@ -2,7 +2,7 @@
   "name": "security-ndjs-lib",
   "version": "1.0.0",
   "description": "Library to manage tokens using js",
-  "main": "src/token.js",
+  "main": "src/util/token.js",
   "types": "types/index.d.ts",
   "scripts": {
     "test": "jest"