Add multilib for Flatpak

Author: redstrate

zone.xiv.novus.yml

@@ -20,6 +20,11 @@ finish-args:
   - --socket=wayland
   - --share=network
   - --device=dri
+  - --allow=multiarch
+add-extensions:
+  org.freedesktop.Platform.Compat.i386:
+    directory: lib/i386-linux-gnu
+    version: '24.08'
 modules:
   - name: qt6-qthttpserver
     buildsystem: cmake-ninja