add docs

pages/docs.php

@@ -0,0 +1,48 @@
+<?php
+
+/**
+ * @var rex_addon $this
+ * @psalm-scope-this rex_addon
+ */
+
+$mdFiles = [];
+foreach (glob(rex_addon::get('blaupause')->getPath('docs') . '/*.md') ?: [] as $file) {
+    $mdFiles[mb_substr(basename($file), 0, -3)] = $file;
+}
+
+$currenMDFile = rex_request('mdfile', 'string', '01_intro');
+if (!array_key_exists($currenMDFile, $mdFiles)) {
+    $currenMDFile = '01_a_intro';
+}
+
+$page = rex_be_controller::getPageObject('blaupause/docs');
+
+if (null !== $page) {
+    foreach ($mdFiles as $key => $mdFile) {
+        $keyWithoudPrio = mb_substr($key, 3);
+        $currenMDFileWithoudPrio = mb_substr($currenMDFile, 3);
+        $page->addSubpage(
+            (new rex_be_page($key, rex_i18n::msg('blaupause_docs_' . $keyWithoudPrio)))
+            ->setSubPath($mdFile)
+            ->setHref('index.php?page=blaupause/docs&mdfile=' . $key)
+            ->setIsActive($key == $currenMDFile),
+        );
+    }
+}
+
+echo rex_view::title($this->i18n('blaupause_title'));
+
+[$Toc, $Content] = rex_markdown::factory()->parseWithToc(rex_file::require($mdFiles[$currenMDFile]), 2, 3, [
+    rex_markdown::SOFT_LINE_BREAKS => false,
+    rex_markdown::HIGHLIGHT_PHP => true,
+]);
+
+$fragment = new rex_fragment();
+$fragment->setVar('content', $Content, false);
+$fragment->setVar('toc', $Toc, false);
+$content = $fragment->parse('core/page/docs.php');
+
+$fragment = new rex_fragment();
+$fragment->setVar('title', rex_i18n::msg('package_help') . ' ', false);
+$fragment->setVar('body', $content, false);
+echo $fragment->parse('core/page/section.php');