Allow format selection when exporting multiple objects or an entire object type

Currently, Capacities lets you choose the export format in two cases:

When exporting a single object;

When performing a full Space export.

However, when selecting multiple objects or exporting all objects of a specific type, the export is limited to CSV, with no option to choose another format.

The request is to allow these two export methods to offer the same format selection available when exporting a single object.

This would be especially useful on Windows, where a full Space export can be significantly slower. It would make it possible to export only a specific object type—or a selected group of objects—directly in the desired format without having to perform a full export.