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/application-loader/application-loader.tsx

@@ -1,53 +0,0 @@
-/*
- * SPDX-FileCopyrightText: 2022 The HedgeDoc developers (see AUTHORS file)
- *
- * SPDX-License-Identifier: AGPL-3.0-only
- */
-
-import type { PropsWithChildren } from 'react'
-import React, { Fragment, Suspense, useMemo } from 'react'
-import { createSetUpTaskList } from './initializers'
-import { LoadingScreen } from './loading-screen/loading-screen'
-import { Logger } from '../../utils/logger'
-import { useAsync } from 'react-use'
-import { ApplicationLoaderError } from './application-loader-error'
-
-const log = new Logger('ApplicationLoader')
-
-/**
- * Initializes the application and executes all the setup tasks.
- * It renders a {@link LoadingScreen} while this is happening. If there are any error, they will be displayed in the {@link LoadingScreen}.
- *
- * @param children The children in the React dom that should be shown once the application is loaded.
- */
-export const ApplicationLoader: React.FC<PropsWithChildren> = ({ children }) => {
-  const { error, loading } = useAsync(async () => {
-    const initTasks = createSetUpTaskList()
-    for (const task of initTasks) {
-      try {
-        await task.task()
-      } catch (reason: unknown) {
-        log.error('Error while initialising application', reason)
-        throw new ApplicationLoaderError(task.name)
-      }
-    }
-  }, [])
-
-  const errorBlock = useMemo(() => {
-    if (error) {
-      return (
-        <Fragment>
-          {error.message}
-          <br />
-          For further information look into the browser console.
-        </Fragment>
-      )
-    }
-  }, [error])
-
-  if (loading || !!errorBlock) {
-    return <LoadingScreen errorMessage={errorBlock} />
-  } else {
-    return <Suspense fallback={<LoadingScreen />}>{children}</Suspense>
-  }
-}