Feature/cleanup files (#528)

* Move menu components into new dir

* Move chapter components into new dir

* Extract menu helper functions

* Move "SelectionFAB" to "collection" dir

* Move debounce hook to global utils dir

* Rename manga "hooks" to "useRefreshManga"

src/components/source/filters/TextFilter.tsx

@@ -9,7 +9,7 @@
 import SearchIcon from '@mui/icons-material/Search';
 import { FormControl, Input, InputAdornment, InputLabel } from '@mui/material';
 import React, { useEffect } from 'react';
-import { useDebounce } from '@/components/manga/hooks';
+import { useDebounce } from '@/util/useDebounce.ts';
 
 interface Props {
     state: string;