[idea] Support Gnome's workflow.

[trusktr]

The coverflow effect is super nice looking, but the functionality itsn't like Gnome's alt-tab or alt-backtick. It'd be super nice to have that. For example, here's what it would need to do:

• [ ] Possible things the plugin can do when switching between applications (alt-tab in my case):*
  • Instead of moving separate windows, you could place windows of the same app together in space, then animate the groups together.
  • Instead of drawing windows you could draw the app icons (approximately the same size as they appear in Gnome's default alt-tab mechanism, and modify the coverflow animation to accomodate the smaller size of the icons. The key to this approach would be not to tilt the icons too much, so that they can all be seen (that's a key feature of Gnome's alt-tab, which helps navigate to the desired app faster).
  • Perhaps, for alt-tab, you could just show Gnome's default alt-tab mechanism, and coverflow could be left to animate windows only when using alt-backtick to cycle between windows of the same app.
• [ ] Possible things the plugin can do when switching between windows of the same app (alt-backtick in my case):*
  • The same as currently, but when selecting a window of a different workspace, there needs to be an animation that lets us know that we are switching workspaces (similar to Gnome's mechanism where once we let go of the keys, our view flies to the other workspace). This is important for context.
  • Additionally to the previous idea, there could be an option to cycle only between windows of the same app in the current workspace instead of across all workspaces (this is unlike Gnome's mechanism, which always cycles between windows of the same app regardless of workspace).