fix: Move content into to frontend directory

Doing this BEFORE the merge prevents a lot of merge conflicts.

Signed-off-by: Tilman Vatteroth <git@tilmanvatteroth.de>

src/components/render-page/document-toc-sidebar.tsx

@@ -1,31 +0,0 @@
-/*
- * SPDX-FileCopyrightText: 2022 The HedgeDoc developers (see AUTHORS file)
- *
- * SPDX-License-Identifier: AGPL-3.0-only
- */
-
-import React, { useState } from 'react'
-import styles from './markdown-document.module.scss'
-import { ShowIf } from '../common/show-if/show-if'
-import { WidthBasedTableOfContents } from './width-based-table-of-contents'
-import type { TocAst } from 'markdown-it-toc-done-right'
-import { useExtensionEventEmitterHandler } from '../markdown-renderer/hooks/use-extension-event-emitter'
-import { TableOfContentsMarkdownExtension } from '../markdown-renderer/extensions/table-of-contents-markdown-extension'
-
-export interface DocumentTocSidebarProps {
-  width: number
-  disableToc: boolean
-  baseUrl: string
-}
-
-export const DocumentTocSidebar: React.FC<DocumentTocSidebarProps> = ({ disableToc, width, baseUrl }) => {
-  const [tocAst, setTocAst] = useState<TocAst>()
-  useExtensionEventEmitterHandler(TableOfContentsMarkdownExtension.EVENT_NAME, setTocAst)
-  return (
-    <div className={`${styles['markdown-document-side']} pt-4`}>
-      <ShowIf condition={!!tocAst && !disableToc}>
-        <WidthBasedTableOfContents tocAst={tocAst as TocAst} baseUrl={baseUrl} width={width} />
-      </ShowIf>
-    </div>
-  )
-}