Default custom outuput path

[Augusto7743]

Hello.
Thanks for making FastFlix.
When adding an source file to convert Fastflix use the same path directory from the file.
If user need save to other path need select an new path.
The problem is when adding an new file the previous used path not is saved and need select the path again.
An setting to select an custom path to converted files avoid it.

Have an nice week.