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/util/metadata.ts

@@ -18,8 +18,8 @@ import {
     Metadata,
     MetadataHolder,
     MetadataKeyValuePair,
-} from 'typings';
-import requestManager, { RequestManager } from 'lib/RequestManager';
+} from '@/typings';
+import requestManager, { RequestManager } from '@/lib/RequestManager';
 
 const APP_METADATA_KEY_PREFIX = 'webUI_';