I ported the LTX Desktop app to Linux, added option for increased step count, and the models folder is now configurable in a json file

Hello everybody, I took a couple of hours this weekend to port the LTX Desktop app to Linux and add some QoL features that I was missing. Mainly, there's now an option to increase the number of steps for inference (in the Playground mode), and the models folder is configurable under ~/. LTXDesktop/model-config.json. Downloading this is very easy. Head to the release page on my fork and download the AppImage. It should do the rest on its own. If you configure a folder where the models are already present, it will skip downloading them and go straight to the UI.