Fix: Clean temp file

We find that app only delete temp file when compressing.
So now, we clean while launching, made it easier to offload unnecessary files.

Version 1.1: Project complete

VideoX is an open source video compress app for iOS with clean UI.

Release Note
The main features of this project have been achieved.
From now on we only accept small changes or new features that do not break the main part of the project.
Also, since I don't have an Apple Developer Program account, I can only provide an unsigned ipa file.
All in all, have fun compressing! 🥰