[Feature]: Loading spinner

[patrickskowronekdkfz]

General Summary

When a user triggers a query, the only visible change in the UI is in the result table. This can make it unclear whether the system is actively processing the request.

Solution: Add a loading spinner that remains visible until one of the following conditions is met:

All queried sites have either returned a result or reported a failure.

The query exceeds the designated time limit.

This will improve user feedback and make the query process more transparent.

Is this Breaking?

No