Peek: Option to use it as a default viewer that opens on doubleclicking files of certain type

[Zhnigo]

Description of the new feature / enhancement

Absolutely love Peek and how near instant it is. I can see myself using it as a default file viewer for pictures, just opening them normally by double clicking and not even bothering with the KB shortcuts.

Scenario when this would be used?

I can absolutely picture myself using it as a default picture viewer, operated with mouse only.

Supporting information

No response