feat: integrate Firebase PHP-JWT library

Added composer configuration files to manage dependencies. Installed and configured the Firebase PHP-JWT library to handle JWT encoding and decoding. This enhancement aims to streamline JWT operations within the project.

Also updated .gitignore to exclude Composer artifacts.

.gitignore

@@ -0,0 +1,2 @@
+composer.phar
+vendor/

classes/core_jwt_manager.php

@@ -16,6 +16,8 @@
 
 namespace auth_jwt;
 
+require_once("../vendor/autoload.php");
+
 use \Firebase\JWT\JWT;
 
 /**

composer.json

@@ -0,0 +1,5 @@
+{
+    "require": {
+        "firebase/php-jwt": "^6.10"
+    }
+}

composer.lock

@@ -0,0 +1,82 @@
+{
+    "_readme": [
+        "This file locks the dependencies of your project to a known state",
+        "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
+        "This file is @generated automatically"
+    ],
+    "content-hash": "dfe27548af6d83b7d428280eae1df087",
+    "packages": [
+        {
+            "name": "firebase/php-jwt",
+            "version": "v6.10.1",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/firebase/php-jwt.git",
+                "reference": "500501c2ce893c824c801da135d02661199f60c5"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/firebase/php-jwt/zipball/500501c2ce893c824c801da135d02661199f60c5",
+                "reference": "500501c2ce893c824c801da135d02661199f60c5",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^8.0"
+            },
+            "require-dev": {
+                "guzzlehttp/guzzle": "^7.4",
+                "phpspec/prophecy-phpunit": "^2.0",
+                "phpunit/phpunit": "^9.5",
+                "psr/cache": "^2.0||^3.0",
+                "psr/http-client": "^1.0",
+                "psr/http-factory": "^1.0"
+            },
+            "suggest": {
+                "ext-sodium": "Support EdDSA (Ed25519) signatures",
+                "paragonie/sodium_compat": "Support EdDSA (Ed25519) signatures when libsodium is not present"
+            },
+            "type": "library",
+            "autoload": {
+                "psr-4": {
+                    "Firebase\\JWT\\": "src"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "BSD-3-Clause"
+            ],
+            "authors": [
+                {
+                    "name": "Neuman Vong",
+                    "email": "neuman+pear@twilio.com",
+                    "role": "Developer"
+                },
+                {
+                    "name": "Anant Narayanan",
+                    "email": "anant@php.net",
+                    "role": "Developer"
+                }
+            ],
+            "description": "A simple library to encode and decode JSON Web Tokens (JWT) in PHP. Should conform to the current spec.",
+            "homepage": "https://github.com/firebase/php-jwt",
+            "keywords": [
+                "jwt",
+                "php"
+            ],
+            "support": {
+                "issues": "https://github.com/firebase/php-jwt/issues",
+                "source": "https://github.com/firebase/php-jwt/tree/v6.10.1"
+            },
+            "time": "2024-05-18T18:05:11+00:00"
+        }
+    ],
+    "packages-dev": [],
+    "aliases": [],
+    "minimum-stability": "stable",
+    "stability-flags": [],
+    "prefer-stable": false,
+    "prefer-lowest": false,
+    "platform": [],
+    "platform-dev": [],
+    "plugin-api-version": "2.6.0"
+}