Feature/use alias for imports (#352)

* Use alias "@" for imports

* Use alias "@" for imports - Fix imports

* Use alias "@" for imports - Prevent faulty "import/extensions" linting issue

For some reason the rule throws an error for alias imports

* Use alias "@" for imports - Update "no-relative-imports" eslint rule

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/RequestManager';
 
 export const useRefreshManga = (mangaId: string) => {
     const [fetchingOnline, setFetchingOnline] = useState(false);