If app is running, don't rerun

[neural-loop]

https://thispointer.com/python-check-if-a-process-is-running-by-name-and-find-its-process-id-pid/#:~:text=To%20check%20if%20process%20is,contains%20the%20given%20name%20processName.

When starting the app, it should check to see if it is already running.
If it is already running, bring already running window to focus and cancel second execution

Needs to work in python and pyinstaller exe