feat: Adding token creator and a parser

types/index.d.ts

+import { JwtPayload } from "jsonwebtoken";
+
 declare module 'security-ndjs-lib' {
     export function createJWT(id: string, subject: object, time?: number): string;
-    export function parseJWT(token?: string, id?: string): TokenModel; // Adjust the signature if needed
+    export function parseJWT(token?: string, id?: string): JwtPayload; // Adjust the signature if needed
 }
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types/tokenmodel.ts

-interface TokenModel {
-    id: string;
-    issuedAt: number;
-    subject: object;
-    issuer: string;
-    iat: number;
-    exp: number;
-}
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