feat(upload): 添加华为 OBS 对象存储支持

- 在 addons.php 中添加了与华为 OBS 相关的钩子
- 新增了对华为 OBS 上传功能的实现，包括分片上传和合并
- 优化了上传参数处理和错误处理
- 支持客户端和服务端两种上传模式

addons/hwobs/library/Obs/Internal/Resource/Constants.php

@@ -0,0 +1,123 @@
+<?php
+
+/**
+ * Copyright 2019 Huawei Technologies Co.,Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not use
+ * this file except in compliance with the License.  You may obtain a copy of the
+ * License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software distributed
+ * under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
+ * CONDITIONS OF ANY KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations under the License.
+ *
+ */
+
+namespace Obs\Internal\Resource;
+
+class Constants {
+    const ALLOWED_RESOURCE_PARAMTER_NAMES = [ 
+            'acl',
+            'policy',
+            'torrent',
+            'logging',
+            'location',
+            'storageinfo',
+            'quota',
+            'storagepolicy',
+            'requestpayment',
+            'versions',
+            'versioning',
+            'versionid',
+            'uploads',
+            'uploadid',
+            'partnumber',
+            'website',
+            'notification',
+            'lifecycle',
+            'deletebucket',
+            'delete',
+            'cors',
+            'restore',
+            'tagging',
+            'response-content-type',
+            'response-content-language',
+            'response-expires',
+            'response-cache-control',
+            'response-content-disposition',
+            'response-content-encoding',
+            'x-image-process',
+
+            'backtosource',
+            'storageclass',
+            'replication',
+            'append',
+            'position',
+            'x-oss-process'
+    ];
+    const ALLOWED_REQUEST_HTTP_HEADER_METADATA_NAMES = [ 
+            'content-type',
+            'content-md5',
+            'content-length',
+            'content-language',
+            'expires',
+            'origin',
+            'cache-control',
+            'content-disposition',
+            'content-encoding',
+            'access-control-request-method',
+            'access-control-request-headers',
+            'x-default-storage-class',
+            'location',
+            'date',
+            'etag',
+            'range',
+            'host',
+            'if-modified-since',
+            'if-unmodified-since',
+            'if-match',
+            'if-none-match',
+            'last-modified',
+            'content-range',
+
+            'success-action-redirect'
+    ];
+    const ALLOWED_RESPONSE_HTTP_HEADER_METADATA_NAMES = [ 
+            'content-type',
+            'content-md5',
+            'content-length',
+            'content-language',
+            'expires',
+            'origin',
+            'cache-control',
+            'content-disposition',
+            'content-encoding',
+            'x-default-storage-class',
+            'location',
+            'date',
+            'etag',
+            'host',
+            'last-modified',
+            'content-range',
+            'x-reserved',
+            'access-control-allow-origin',
+            'access-control-allow-headers',
+            'access-control-max-age',
+            'access-control-allow-methods',
+            'access-control-expose-headers',
+            'connection'
+    ];
+    
+    public static function selectConstants($signature) {
+        $signature = (strcasecmp ( $signature, 'obs' ) === 0) ? 'OBS' : 'V2';
+        return __NAMESPACE__ . '\\' . $signature . 'Constants';
+    }
+    
+    public static function selectRequestResource($signature) {
+        $signature = (strcasecmp ( $signature, 'obs' ) === 0) ? 'OBS' : 'V2';
+        return (__NAMESPACE__ . '\\' . $signature . 'RequestResource');
+    }
+
+}