feat: Add comprehensive documentation suite and reorganize project structure

- Created complete documentation in docs/ directory
- Added PROJECT_OVERVIEW.md with feature highlights and getting started guide
- Added ARCHITECTURE.md with system design and technical details
- Added SECURITY.md with comprehensive security implementation guide
- Added DEVELOPMENT.md with development workflows and best practices
- Added DEPLOYMENT.md with production deployment instructions
- Added API.md with complete REST API documentation
- Added CONTRIBUTING.md with contribution guidelines
- Added CHANGELOG.md with version history and migration notes
- Reorganized all documentation files into docs/ directory for better organization
- Updated README.md with proper documentation links and quick navigation
- Enhanced project structure with professional documentation standards

Zend/Http/Client/Adapter/Interface.php

@@ -0,0 +1,78 @@
+<?php
+
+/**
+ * Zend Framework
+ *
+ * LICENSE
+ *
+ * This source file is subject to the new BSD license that is bundled
+ * with this package in the file LICENSE.txt.
+ * It is also available through the world-wide-web at this URL:
+ * http://framework.zend.com/license/new-bsd
+ * If you did not receive a copy of the license and are unable to
+ * obtain it through the world-wide-web, please send an email
+ * to license@zend.com so we can send you a copy immediately.
+ *
+ * @category   Zend
+ * @package    Zend_Http
+ * @subpackage Client_Adapter
+ * @version    $Id: Interface.php 24594 2012-01-05 21:27:01Z matthew $
+ * @copyright  Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license    http://framework.zend.com/license/new-bsd     New BSD License
+ */
+
+/**
+ * An interface description for Zend_Http_Client_Adapter classes.
+ *
+ * These classes are used as connectors for Zend_Http_Client, performing the
+ * tasks of connecting, writing, reading and closing connection to the server.
+ *
+ * @category   Zend
+ * @package    Zend_Http
+ * @subpackage Client_Adapter
+ * @copyright  Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license    http://framework.zend.com/license/new-bsd     New BSD License
+ */
+interface Zend_Http_Client_Adapter_Interface
+{
+    /**
+     * Set the configuration array for the adapter
+     *
+     * @param array $config
+     */
+    public function setConfig($config = array());
+
+    /**
+     * Connect to the remote server
+     *
+     * @param string  $host
+     * @param int     $port
+     * @param boolean $secure
+     */
+    public function connect($host, $port = 80, $secure = false);
+
+    /**
+     * Send request to the remote server
+     *
+     * @param string        $method
+     * @param Zend_Uri_Http $url
+     * @param string        $http_ver
+     * @param array         $headers
+     * @param string        $body
+     * @return string Request as text
+     */
+    public function write($method, $url, $http_ver = '1.1', $headers = array(), $body = '');
+
+    /**
+     * Read response from server
+     *
+     * @return string
+     */
+    public function read();
+
+    /**
+     * Close the connection to the server
+     *
+     */
+    public function close();
+}