For motion photos, remember last display mode

[mherrmann3]

Is your feature request related to a problem? Please describe.
When swiping through motion photos, Aves supports via a setting¹ to either display always the main photo, or always the motion video. But when reviewing a (large) set of them, it would be extremely convenient to remain in the mode that the user selected last. For instance:

1. when I have the main photo selected, and I select/swipe to the next photo, it should remain showing the main photo of that photo;
2. when I then select the motion video, and I select/swipe to the next photo, it should remain showing the motion video of that photo.

This (optional) behavior would make reviewing motion photos much faster and more pleasing, as it avoids switching back and forth the mode at each photo.

Describe the solution you'd like
Either:

• add another option "Remember motion photo display mode" or "Keep last motion photo display mode" (or similar) - but it would somehow clash with the existing setting¹;
• revise the existing setting¹ to a dropdown: "Motion photos display mode" > Always main photo / Autoplay motion / Last used

Describe alternatives you've considered

Additional context

Footnotes

1. Viewer > Auto play motion photos ↩ ↩² ↩³