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>

frontend/src/components/editor-page/document-bar/aliases/aliases-modal.tsx

@@ -0,0 +1,38 @@
+/*
+ * SPDX-FileCopyrightText: 2022 The HedgeDoc developers (see AUTHORS file)
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+import React from 'react'
+import { ListGroup, ListGroupItem, Modal } from 'react-bootstrap'
+import type { CommonModalProps } from '../../../common/modals/common-modal'
+import { CommonModal } from '../../../common/modals/common-modal'
+import { Trans, useTranslation } from 'react-i18next'
+import { AliasesList } from './aliases-list'
+import { AliasesAddForm } from './aliases-add-form'
+
+/**
+ * Component that holds a modal containing a list of aliases associated with the current note.
+ *
+ * @param show True when the modal should be visible, false otherwise.
+ * @param onHide Callback that is executed when the modal is dismissed.
+ */
+export const AliasesModal: React.FC<CommonModalProps> = ({ show, onHide }) => {
+  useTranslation()
+
+  return (
+    <CommonModal show={show} onHide={onHide} title={'editor.modal.aliases.title'} showCloseButton={true}>
+      <Modal.Body>
+        <p>
+          <Trans i18nKey={'editor.modal.aliases.explanation'} />
+        </p>
+        <ListGroup>
+          <AliasesList />
+          <ListGroupItem>
+            <AliasesAddForm />
+          </ListGroupItem>
+        </ListGroup>
+      </Modal.Body>
+    </CommonModal>
+  )
+}