Add detection method for Magisk by update file

[dudelburg]

Hi there,

thank you for the great work - this app saves a lot of time in figuring out why root is detected. Would it be possible to add a new method for detecting root (and is this the correct channel to communicate this?):

Some apps look for the file /system/addon.d/99-magisk.sh to detect, if Magisk / root is present. It would be great if the app could detect this as well and display the current state.

Kind regards