kcm/autostart: Check shebang in autostart scripts
Check if first line has shebang, if it doesn't then check suffix. If suffix is .sh or .py then offer to add shebang. If other suffix then let the user know that this script won't be autostarted and let user learn more at https://docs.kde.org/stable5/en/plasma-workspace/kcontrol/autostart/index.html
Edited by Thenujan Sandramohan