[Feature Request] Add image preview and "choose file" button to browse the filesystem

[MoonMoon82]

Hi!

This node is already really awesome! Thanks for you great work! Could you please add a "choose file" button to browse the filesystem? That would be very helpful to search for the right file without copy+paste any path.

Also it would be great to have preview of the image file in the node as soon the path of the image file has been changed.

Kind regards