Failed to open script options directory: ..

This seems to cause Celluloid crashes and slow starting:

```bash
celluloid[32716]: Failed to open script options directory: /home/core/.var/app/io.github.celluloid_player.Celluloid/config/celluloid/script-opts
```

To workaround/fix the crashing:

```bash
mkdir -p /home/core/.var/app/io.github.celluloid_player.Celluloid/config/celluloid/script-opts
```

Is this a known issue? I think the path needs to be added to the Flatpak persists options.