Add generation indicator to GUI [Feature Request]

[Simon-Davies]

When supplying genesis with a large ps1 file such as Invoke-Mimikatz it takes a long time to obfuscate the script.

It would be a good idea to add a generation indicator so the user knows it is doing something and it's not bugged out.

[ThisIsLibra]

Given how the GUI communicates with the back-end, a status indicator isn't possible without partially redesigning the back-end. As such, I'll include a warning label that the generation might take some time, based on the size of the input.