fix: deprecation warning of Implicitly marking parameters as nullable for PHP 8.4

Author: Machometec

lib/Message/Cookies.php

@@ -38,7 +38,7 @@ public function getValue(String $name): ?string
         return $this->Cookies[$name] ?? null;
     }
 
-    public function add(String $name, string $value, CookieOptions $options = null): void
+    public function add(String $name, string $value, ?CookieOptions $options = null): void
     {
         $cookie = "{$name}={$value};";
         if ($options) {

lib/Message/Form.php

@@ -17,9 +17,9 @@ class Form
     private array $fields;
     private FormFileCollection $files;
 
-    public function __construct(array $fields = null, FormFileCollection $files = null)
+    public function __construct(array $fields = [], ?FormFileCollection $files = null)
     {
-        if (!$fields) {
+        if ($fields == []) {
             $fields = $_POST;
         }
 

lib/Message/HttpResponse.php

@@ -114,7 +114,7 @@ public function get_StatusCode(): string
         return $this->statusCode;
     }
 
-    public function setStatusCode(int $statusCode, string $reasonPhrase = null)
+    public function setStatusCode(int $statusCode, ?string $reasonPhrase = null)
     {
         if (!$reasonPhrase) {
             if (isset($this->messages[$statusCode])) {