This extension for GNOME Shell adds ability to switch layout using Alt+Shift in addition to default Super+Space shortcut.
Installation via git is performed by cloning the repo into your local gnome-shell extensions directory (usually ~/.local/share/gnome-shell/extensions/)::
$ git clone https://github.com/Seriyyy95/switchlayoutaltshift.git <extensions-dir>/[email protected]
After cloning the repo, the extension is practically installed yet disabled. In order to enable it, run the following command::
$ gnome-extensions enable [email protected]
Tested only with GNOME 42, 43 and 44 in Ubuntu and Fedora.