Move "RequestManager" in sub folder

src/components/manga/ChapterCard.tsx

@@ -28,7 +28,7 @@ import React from 'react';
 import { Link } from 'react-router-dom';
 import { useTranslation } from 'react-i18next';
 import { IChapter, IDownloadChapter } from '@/typings';
-import requestManager from '@/lib/RequestManager';
+import requestManager from '@/lib/requests/RequestManager.ts';
 import { getUploadDateString } from '@/util/date';
 import DownloadStateIndicator from '@/components/molecules/DownloadStateIndicator';
 

src/components/manga/ChapterList.tsx

@@ -12,7 +12,7 @@ import React, { ComponentProps, useEffect, useMemo, useRef, useState } from 'rea
 import { Virtuoso } from 'react-virtuoso';
 import { useTranslation } from 'react-i18next';
 import { BatchChaptersChange, IChapter, IDownloadChapter, IQueue, TranslationKey } from '@/typings';
-import requestManager from '@/lib/RequestManager';
+import requestManager from '@/lib/requests/RequestManager.ts';
 import useSubscription from '@/components/library/useSubscription';
 import ChapterCard from '@/components/manga/ChapterCard';
 import ResumeFab from '@/components/manga/ResumeFAB';

src/components/manga/MangaDetails.tsx

@@ -16,7 +16,7 @@ import { mutate } from 'swr';
 import { t as translate } from 'i18next';
 import Button from '@mui/material/Button';
 import { IManga, ISource } from '@/typings';
-import requestManager from '@/lib/RequestManager';
+import requestManager from '@/lib/requests/RequestManager.ts';
 import makeToast from '@/components/util/Toast';
 
 const DetailsWrapper = styled('div')(({ theme }) => ({

src/components/manga/hooks.ts

@@ -8,7 +8,7 @@
 
 import { useCallback, useEffect, useState } from 'react';
 import { mutate } from 'swr';
-import requestManager, { RequestManager } from '@/lib/RequestManager';
+import requestManager, { RequestManager } from '@/lib/requests/RequestManager.ts';
 
 export const useRefreshManga = (mangaId: string) => {
     const [fetchingOnline, setFetchingOnline] = useState(false);