Keep track of upstream adwaita-icon-theme

[Amr Ibrahim]

Since Yaru is now syncing with upstream adwaita-gtk and gnome-shell themes, I think it would be a good idea to also keep an eye on upstream adwaita-icon-theme.

adwaita-icon-theme mostly contains symbolic and action icons that correspond to code changes in gnome-shell, gnome-control-center and the rest of gnome apps. In every gnome development cycle, adwaita-icon-theme adds, fixes, or enhances its symbolic icons in order to reflect the code changes in the gnome stack. adwaita-icon-theme does not contain app icons since gnome apps ship their own icons.
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An example to elaborate:

In the 3.34 development cycle, gnome added new battery icons in order to better represent the battery charge states:
https://gitlab.gnome.org/GNOME/adwaita-icon-theme/issues/6

That has resulted in:

21 new battery icons in adwaita-icon-theme and moving the legacy battery icons to a legacy folder:
https://gitlab.gnome.org/GNOME/adwaita-icon-theme/commit/377044f755c3ec994f661d787f50e633487b929d

Code changes in gnome-shell to use the new icons, if available, and fall back to the existing icon names for compatibility with older icon themes:
https://gitlab.gnome.org/GNOME/gnome-shell/commit/bd18313d125aa1873c21b9cce9bbf81a335e48b0

Without reflecting the new changes in Yaru*, gnome-shell would still be falling back to the legacy icons, and not showing a better charge state as a result.
* https://github.com/ubuntu/yaru/issues/1482
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Here is the gnome-stencils.svg as a reference:
https://gitlab.gnome.org/GNOME/adwaita-icon-theme/blob/master/src/symbolic/gnome-stencils.svg

[Carlo Lobrano (c-lobrano)]

Already tracked on github

[Carlo Lobrano (c-lobrano)]

It is not easy to implement this automatically, but we are already keeping an eye on adwaita icon theme