[Feature Request] Add Ctrl+Enter shortcut to "Show in File Manager"

Thank you for developing such a useful search tool.

I would like to suggest an improvement to the keyboard navigation in Catfish to enable a more efficient, mouse-free workflow.

Proposed Features:

1. New Default Shortcut: Add Ctrl+Enter as the default shortcut to trigger the "Show in File Manager" (Open containing folder) action for the currently selected item in search results.
2. Customizable Shortcuts: If possible, consider adding a way for users to rebind or customize these shortcuts to better fit their personal habits.