feat: Adding token creator and a parser

package.json

@@ -2,7 +2,8 @@
   "name": "security-ndjs-lib",
   "version": "1.0.0",
   "description": "Library to manage tokens using js",
-  "main": "index.js",
+  "main": "src/token.js",
+  "types": "types/index.d.ts",
   "scripts": {
     "test": "jest"
   },

types/index.d.ts

+declare module 'security-ndjs-lib' {
+    export function createJWT(id: string, subject: object, time?: number): string;
+    export function parseJWT(token: string, id?: string): string; // Adjust the signature if needed
+}
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