[Feature Request] Wallpaper directory cycle-through

[smathles]

Is your feature request related to a problem? Please describe.
Currently the ags interface only allows for a single wallpaper to be set at a time, no option to have a wallpaper directory.

Describe the solution you'd like
I'd like to be able to:

• Select either a directory or an image to set as my wallpaper.
• If then a directory is selected, I'd like to be able to set a speed for switching the wallpaper. Preferably this would also be able to be integrated with Matugen to update the colour schemes for each change.

Optional features (not really critical, just quality of life):

• Ability to select what swww wallpaper switching animation is used.
• Matugen colour scheme re-application and wallpaper switch is simultaneous with the wallpaper switch animation, not lagging a few seconds after.
  • No idea how easy/hard this is to implement, nor how much more/less hardware resources it would demand.

Describe alternatives you've considered
Writing a custom script separate from ags to achieve this anyway. It would be nice to achieve it in the menu though.

Additional context
Elephants are cool.