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/Required.php

@@ -1,118 +0,0 @@
-<?php
-
-/**
- * Definition that allows a set of elements, but disallows empty children.
- */
-class HTMLPurifier_ChildDef_Required extends HTMLPurifier_ChildDef
-{
-    /**
-     * Lookup table of allowed elements.
-     * @type array
-     */
-    public $elements = array();
-
-    /**
-     * Whether or not the last passed node was all whitespace.
-     * @type bool
-     */
-    protected $whitespace = false;
-
-    /**
-     * @param array|string $elements List of allowed element names (lowercase).
-     */
-    public function __construct($elements)
-    {
-        if (is_string($elements)) {
-            $elements = str_replace(' ', '', $elements);
-            $elements = explode('|', $elements);
-        }
-        $keys = array_keys($elements);
-        if ($keys == array_keys($keys)) {
-            $elements = array_flip($elements);
-            foreach ($elements as $i => $x) {
-                $elements[$i] = true;
-                if (empty($i)) {
-                    unset($elements[$i]);
-                } // remove blank
-            }
-        }
-        $this->elements = $elements;
-    }
-
-    /**
-     * @type bool
-     */
-    public $allow_empty = false;
-
-    /**
-     * @type string
-     */
-    public $type = 'required';
-
-    /**
-     * @param array $children
-     * @param HTMLPurifier_Config $config
-     * @param HTMLPurifier_Context $context
-     * @return array
-     */
-    public function validateChildren($children, $config, $context)
-    {
-        // Flag for subclasses
-        $this->whitespace = false;
-
-        // if there are no tokens, delete parent node
-        if (empty($children)) {
-            return false;
-        }
-
-        // the new set of children
-        $result = array();
-
-        // whether or not parsed character data is allowed
-        // this controls whether or not we silently drop a tag
-        // or generate escaped HTML from it
-        $pcdata_allowed = isset($this->elements['#PCDATA']);
-
-        // a little sanity check to make sure it's not ALL whitespace
-        $all_whitespace = true;
-
-        $stack = array_reverse($children);
-        while (!empty($stack)) {
-            $node = array_pop($stack);
-            if (!empty($node->is_whitespace)) {
-                $result[] = $node;
-                continue;
-            }
-            $all_whitespace = false; // phew, we're not talking about whitespace
-
-            if (!isset($this->elements[$node->name])) {
-                // special case text
-                // XXX One of these ought to be redundant or something
-                if ($pcdata_allowed && $node instanceof HTMLPurifier_Node_Text) {
-                    $result[] = $node;
-                    continue;
-                }
-                // spill the child contents in
-                // ToDo: Make configurable
-                if ($node instanceof HTMLPurifier_Node_Element) {
-                    for ($i = count($node->children) - 1; $i >= 0; $i--) {
-                        $stack[] = $node->children[$i];
-                    }
-                    continue;
-                }
-                continue;
-            }
-            $result[] = $node;
-        }
-        if (empty($result)) {
-            return false;
-        }
-        if ($all_whitespace) {
-            $this->whitespace = true;
-            return false;
-        }
-        return $result;
-    }
-}
-
-// vim: et sw=4 sts=4