Move all composer files inside the common directory

- 2022년 3월 개발팀 결정사항 적용
- 모듈 등 서드파티 자료 개발시 composer를 사용하면 상위 경로에 있는 코어의
  composer.json을 수정하고, 코어의 vendor 디렉토리를 건드리는 것이 기본값임
- 이를 방지하기 위해 코어의 composer.json과 vendor를 common 디렉토리 안으로
  이동하여, 모듈 경로에서 상위 폴더로 인식하지 않도록 함

vendor/ezyang/htmlpurifier/library/HTMLPurifier/ChildDef.php

@@ -1,52 +0,0 @@
-<?php
-
-/**
- * Defines allowed child nodes and validates nodes against it.
- */
-abstract class HTMLPurifier_ChildDef
-{
-    /**
-     * Type of child definition, usually right-most part of class name lowercase.
-     * Used occasionally in terms of context.
-     * @type string
-     */
-    public $type;
-
-    /**
-     * Indicates whether or not an empty array of children is okay.
-     *
-     * This is necessary for redundant checking when changes affecting
-     * a child node may cause a parent node to now be disallowed.
-     * @type bool
-     */
-    public $allow_empty;
-
-    /**
-     * Lookup array of all elements that this definition could possibly allow.
-     * @type array
-     */
-    public $elements = array();
-
-    /**
-     * Get lookup of tag names that should not close this element automatically.
-     * All other elements will do so.
-     * @param HTMLPurifier_Config $config HTMLPurifier_Config object
-     * @return array
-     */
-    public function getAllowedElements($config)
-    {
-        return $this->elements;
-    }
-
-    /**
-     * Validates nodes according to definition and returns modification.
-     *
-     * @param HTMLPurifier_Node[] $children Array of HTMLPurifier_Node
-     * @param HTMLPurifier_Config $config HTMLPurifier_Config object
-     * @param HTMLPurifier_Context $context HTMLPurifier_Context object
-     * @return bool|array true to leave nodes as is, false to remove parent node, array of replacement children
-     */
-    abstract public function validateChildren($children, $config, $context);
-}
-
-// vim: et sw=4 sts=4