external editor for scripts

[Victor-Haefner]

add a button to scripting that allows editing the script outside

write out the script to a tmp file, activate inotify

https://developer.ibm.com/tutorials/l-ubuntu-inotify/

try to find available editors in path and let the user choose

[Victor-Haefner]

for windows

https://learn.microsoft.com/en-us/windows/win32/fileio/obtaining-directory-change-notifications?redirectedfrom=MSDN