feat: Add extest library to fix Steam input on Wayland desktop

Author: KyleGospo

Containerfile

@@ -256,6 +256,7 @@ RUN rpm-ostree install \
 # Install Steam and Lutris into their own OCI layer
 RUN rpm-ostree install \
     steam \
+    extest.i686 \
     lutris \
     gamescope \
     gamescope-session \

README.md

@@ -134,6 +134,7 @@ Ported SteamOS and ChimeraOS packages, among others used by Bazzite, are built o
 |Package|Status|
 |---|---|
 |ds-inhibit|![Build Status](https://copr.fedorainfracloud.org/coprs/kylegospo/bazzite/package/ds-inhibit/status_image/last_build.png?)|
+|[extest](https://github.com/Supreeeme/extest)|![Build Status](https://copr.fedorainfracloud.org/coprs/kylegospo/bazzite-multilib/package/extest/status_image/last_build.png?)|
 |[gamescope-session](https://github.com/ChimeraOS/gamescope-session)|![Build Status](https://copr.fedorainfracloud.org/coprs/kylegospo/bazzite/package/gamescope-session/status_image/last_build.png?)|
 |gnome-shell-extension-bazzite-menu|![Build Status](https://copr.fedorainfracloud.org/coprs/kylegospo/bazzite/package/gnome-shell-extension-bazzite-menu/status_image/last_build.png?)|
 |[gnome-shell-extension-compiz-windows-effect](https://github.com/hermes83/compiz-windows-effect)|![Build Status](https://copr.fedorainfracloud.org/coprs/kylegospo/bazzite/package/gnome-shell-extension-compiz-windows-effect/status_image/last_build.png?)|