Support the exit parameter in the Python module (donut-shellcode)

[physics-sec]

When using the donut python module is not possible to specify the exit function (thread or process)

If I understood the code correctly, it shouldn't be too hard, just add this code at the end of ThreadProc in payload.c on the donut-shellcode C code. (I couldn't find the repo of the python module, just downloaded the code from here)

Hope you will consider adding this options.
Thank you

[physics-sec]

If you build from sources: sudo pip3 install . you can use that option... my bad!