gamepad: Add initial controller navigation (#406)

Co-authored-by: kramo <git@kramo.page>
Co-authored-by: Zoey Ahmed <zoethetransrat@gmail.com>
Reviewed-on: https://codeberg.org/kramo/cartridges/pulls/406
Reviewed-by: Laura Kramolis <git@kramo.page>
Reviewed-by: Jamie Gravendeel <me@jamie.garden>
Co-authored-by: Zoey Ahmed <zoeyahmed10@proton.me>
Co-committed-by: Zoey Ahmed <zoeyahmed10@proton.me>

flatpak/page.kramo.Cartridges.Devel.json

@@ -8,6 +8,7 @@
     "--share=ipc",
     "--socket=fallback-x11",
     "--device=dri",
+    "--device=input",
     "--socket=wayland",
     "--talk-name=org.freedesktop.Flatpak",
     "--filesystem=host:ro",