Feature request: Allow "Enter" to be a key that locks the image on screen

[dzek69]

Is your feature request related to a problem? Please describe.
I'm coming from other extension with similar functions (Imagus probably, I already forgot), it has the same lock image on screen feature, but it was under the Enter Key (either by default or I set it like that). I'm so used to do it even after half a year of using Hover Zoom + I still press it instead of the alternative I selected because of absence of Enter key in the drodown.

Describe the solution you'd like
Allow Enter key to be selected from the dropdown.

Describe alternatives you've considered
I tried Shift - it's a big key, next to Enter, but it's "not it".

Additional context
I think it wouldn't be a big deal to add Enter. Fingers crossed!