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/navbar/action/CategorySelect.tsx

@@ -16,7 +16,7 @@ import Checkbox from '@mui/material/Checkbox';
 import FormControlLabel from '@mui/material/FormControlLabel';
 import FormGroup from '@mui/material/FormGroup';
 import { useTranslation } from 'react-i18next';
-import requestManager from 'lib/RequestManager';
+import requestManager from '@/lib/RequestManager';
 
 interface IProps {
     open: boolean;