Download the main.py file from the autotiling folder.
Install python3-i3ipc
sudo apt install python3-i3ipc
Move the main.py file from Downloads to /usr/bin and rename it autotiling
sudo mv main.py /usr/bin/autotiling
Make the autotiling file executable
sudo chmod +x /usr/bin/autotiling
add the autotiling to i3 config
vim ~/.config/i3/config
### Add the following two lines
# enable autotiling (from https://github.com/nwg-piotr/autotiling )
exec_always --no-startup-id autotiling