refactor: Update credentials classes

- Update `AggregateCredential` class
- Delete `HeaderCredential` class
- Delete `KeyValueCredential` class
- Add `PayloadCredential` class
- Delete `QueryCredential` class
- Update `TokenAuthCredential` class

Author: guanguans

src/Foundation/Credentials/AggregateCredential.php

@@ -31,7 +31,7 @@ public function applyToOptions(array $options): array
     {
         return array_reduce(
             $this->credentials,
-            static fn (array $carry, Credential $credential): array => $credential->applyToOptions($carry),
+            static fn (array $options, Credential $credential): array => $credential->applyToOptions($options),
             $options,
         );
     }

src/Foundation/Credentials/HeaderCredential.php

@@ -0,0 +1,38 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * This file is part of the guanguans/notify.
+ *
+ * (c) guanguans <ityaozm@gmail.com>
+ *
+ * This source file is subject to the MIT license that is bundled.
+ */
+
+namespace Guanguans\Notify\Foundation\Credentials;
+
+use GuzzleHttp\RequestOptions;
+
+class PayloadCredential extends NullCredential
+{
+    private array $payload;
+
+    private string $type;
+
+    public function __construct(array $payload, string $type)
+    {
+        $this->payload = $payload;
+        $this->type = $type;
+    }
+
+    public function applyToOptions(array $options): array
+    {
+        $options[$this->type] = array_merge(
+            $options[$this->type] ?? [],
+            RequestOptions::MULTIPART === $this->type ? to_multipart($this->payload) : $this->payload
+        );
+
+        return $options;
+    }
+}

src/Foundation/Credentials/KeyValueCredential.php

@@ -12,10 +12,12 @@
 
 namespace Guanguans\Notify\Foundation\Credentials;
 
-class TokenAuthCredential extends HeaderCredential
+use GuzzleHttp\RequestOptions;
+
+class TokenAuthCredential extends PayloadCredential
 {
     public function __construct(string $token, ?string $type = 'Bearer')
     {
-        parent::__construct(trim("$type $token"));
+        parent::__construct(['Authorization' => trim("$type $token")], RequestOptions::HEADERS);
     }
 }