Add proper user-friendly theme manager (#635)

Co-authored-by: Justice Almanzar <superdash993@gmail.com>
Co-authored-by: Nuckyz <61953774+Nuckyz@users.noreply.github.com>
Co-authored-by: V <vendicated@riseup.net>

src/components/VencordSettings/shared.tsx

@@ -17,6 +17,7 @@
 */
 
 import "./settingsStyles.css";
+import "./themesStyles.css";
 
 import ErrorBoundary from "@components/ErrorBoundary";
 import { handleComponentFailed } from "@components/handleComponentFailed";