Patches to bring back a traditional experience for GTK 4.

- See: https://gist.github.com/luigifab/0fce786cdb93b5687069a82f490ea95e
- See also: https://github.com/lah7/gtk3-classic
- Source of orig file: https://packages.debian.org/source/trixie/gtk4
- DEB packages: https://download.opensuse.org/repositories/home:/luigifab/Debian_Testing/amd64/

USAGE FOR DEBIAN TESTING:

-------------------------------------------
1/ add the gpg key:

`wget -qO - https://build.opensuse.org/projects/home:luigifab/signing_keys/download?kind=gpg | sudo apt-key add -`

or

`wget -qO - https://build.opensuse.org/projects/home:luigifab/signing_keys/download?kind=gpg | sudo gpg --dearmor -o /etc/apt/trusted.gpg.d/luigifab-opoensuse.gpg`

-------------------------------------------
2/ add in your /etc/apt/sources.list (arch= amd64 or arm64 or armhf or i386 or ppc64el):

`deb [arch=amd64] https://download.opensuse.org/repositories/home:/luigifab/Debian_Testing/ ./`

-------------------------------------------
3/ add in your /etc/apt/preferences:

```
Package: *gtk*
Pin: origin download.opensuse.org
Pin-Priority: 850

Package: *gail*
Pin: origin download.opensuse.org
Pin-Priority: 850
```

-------------------------------------------
4/ refresh packages lists and apply updates